Impact Factor 1.895 | CiteScore 2.24
More on impact ›

Original Research ARTICLE

Front. Phys., 28 February 2020 | https://doi.org/10.3389/fphy.2020.00033

Generalized Mittag-Leffler Type Function: Fractional Integrations and Application to Fractional Kinetic Equations

  • Department of Mathematics, College of Arts and Sciences, Prince Sattam Bin Abdulaziz University, Wadi Aldawaser, Saudi Arabia

The generalized fractional integrations of the generalized Mittag-Leffler type function (GMLTF) are established in this paper. The results derived in this paper generalize many results available in the literature and are capable of generating several applications in the theory of special functions. The solutions of a generalized fractional kinetic equation using the Sumudu transform is also derived and studied as an application of the GMLTF.

1. Introduction

The Pochhammer symbol (ϖ)n is defined by (for ϖ ∈ ℂ)[see ([1], p. 2 and p. 5)]:

(ϖ)n:={1(n=0)ϖ(ϖ+1)(ϖ+n-1) (n)            =Γ(ϖ+n)Γ(ϖ) (ϖ\0-).    (1)

The familiar generalized hypergeometric function pFq is defined as follows (see [2]):

 pFq[(ϖp);(χq);x]=n=0Πj=1p(ϖj)nΠj=1q(χj)nxnn!,    (2)
(pq,x;p=q+1,|x|<1),

where (ϖj)n and (χj)n given in (1) and χi can not be a negative integer or zero. Here p or q or both are permitted to be zero. For all finite x, the series (2) is absolutely convergent if pq and for |x| < 1 if p = q + 1. When p > q + 1, then the series diverge for x ≠ 0 and the series does not terminate.

In particular, if p = 2 and q = 1, (2) reduces to the Gaussian hypergeometric function

 2F1(ϖ1,ϖ2;ϖ3;x)=k=0(ϖ1)n(ϖ2)n(ϖ3)nxnn!.    (3)

The function rΨs(z) is the generalized Wright hypergeometric series which is given by

 rΨs(z)=rΨs[(𝔞i,ϖi)1,r(𝔟j,χj)1,s|z]=k=0i=1rΓ(𝔞i+ϖik)j=1sΓ(𝔟j+χjk)zkk!,    (4)

where 𝔞i, 𝔟j ∈ ℂ, and real ϖi, χj ∈ ℝ (i = 1, 2, …, r; j = 1, 2, …, s). The asymptotic behavior of (4) for large values of argument of z ∈ ℂ were mentioned in [3, 4] (also, see [5, 6]).

To proceed our study, we need the definitions of the Mittag-Leffler functions (MLF) denoted by Eϖ(z) (see [7]) and Eϖ, χ(x) [8], respectively:

Eϖ(x)=n=0xnΓ(ϖn+1)(x,ϖ;|x|<0,(ϖ)>0).    (5)
Eϖ,χ(x)=n=0xnΓ(ϖn+χ)(x,ϖ,χ;                  (ϖ)>0,(χ)>0).    (6)

Many more generalizations and extensions of MLF widely studied recently [9, 10]. Also, the MLF performs an important role in physics and engineering problems. The derivations of physical problems of exponential nature could be governed by the physical laws through the MLF (power-law) [1113].

Very recently, Nisar [14] defined a generalized Mittag-Leffler type function which is defined as follows

For ρ, σ, ς ∈ ℂ, ℜ(κ) > 0, δ ≠ 0, −1, −2, ⋯ , (κ)s and (ω)s denotes the Pochammer symbol.

 pEq;δρ,σ;ς(z)= pEq,δρ,σ,ς(κ1,κ2,,κp;ω1,ω2,,ωq;z)                        =s=0(κ1)s(κ2)s(κp)s(ω1)s(ω2)s(ωq)s(ς)szs(δ)sΓ(ρs+σ).    (7)

By assuming particular values for various parameters in (7), we get many of the popular functions in the literature. For example,  pEq;1ρ ,σ ; ς(z) gives the K− function [15] and  0E0;1ρ ,σ ; ς(z) turns to Eρ,σς(z) [16]. Also,  0E0;1ρ ,σ ; δ(z) reduces to Eρ,σς,δ(z) [17] and  0E0;1ρ ,σ ; 1(z) gives the Mittag-Leffler function Eρ, σ(z) [8]. Similar way,  0E0;1ρ ,1 ; 1(z) turns to the Mittag-Leffler functions Eρ(z) [7]. For more details one can be referred to Nisar [14].

2. Generalized Fractional Integration of GMLTF

Fractional calculus is one of the prominent branch of applied mathematics that deals with non-integer order derivatives and integrals (including complex orders), and their applications in almost all disciplines of science and engineering [1822]. In this line, the use of special functions in connection with fractional calculus also studied widely [2327]. For the basics of fractional calculus and its related literature, interesting readers can be referred to as Kiryakova [28], Miller and Ross [29], and Srivastava et al. [30]. In this paper, we studied the generalized fractional calculus of more generalized function given in (7). The generalized fractional integral operators (FIOs) involving the Appell functions F3 are given for ϖ, ϖ′, τ, τ′, ϵ ∈ ℂ with ℜ(ϵ) > 0 and x ∈ ℝ+as follows:

(I0+ϖ,ϖ,τ,τ,ϵf)(x)=x-ϖΓ(ϵ)0x(x-t)ϵ-1t-ϖ               F3(ϖ,ϖ,τ,τ;ϵ;1-tx,1-xt)f(t)dt    (8)

and

(I-ϖ,ϖ,τ,τ,ϵf)(x)=x-ϖΓ(ϵ)x(t-x)ϵ-1t-ϖ             F3(ϖ,ϖ,τ,τ;ϵ;1-tx,1-xt)f(t)dt.    (9)

The integral operators of the types (8) and (9) have been introduced by Marichev [31] and later extended and studied by Saigo and Maeda [32]. Recently, many researchers (see [3335]) have studied the image formulas for MSM FIOs involving various special functions.

The corresponding fractional differential operators (FDOs) have their respective forms:

(D0+ϖ,ϖ,τ,τ,ϵf)(x)=(ddx)[(ϵ)]+1   (I0+-ϖ,-ϖ,-τ+[(ϵ)]+1,-τ,-ϵ+[(ϵ)]+1f)(x)    (10)

and

(D-ϖ,ϖ,τ,τ,ϵf)(x)=(-ddx)[(ϵ)]+1   (I--ϖ,-ϖ,-τ,-τ+[(ϵ)]+1,-ϵ+[(ϵ)]+1f)(x).    (11)

Here, we recall the following results (see [32, 36]).

LEMMA 2.1. Let ϖ, ϖ′, τ, τ′, ϵ, σ ∈ ℂ be such that ℜ(ϵ) > 0 and

(σ)>max{0,(ϖ+ϖ+τ-ϵ),(ϖ-τ)}.

Then there exists the relation

(I0+ϖ,ϖ,τ,τ,ϵtσ-1)(x)=Γ(σ)Γ(σ+ϵ-ϖ-ϖ-τ)Γ(σ+τ-ϖ)Γ(σ+τ)Γ(σ+ϵ-ϖ-ϖ)Γ(σ+ϵ-ϖ-τ)xσ-ϖ-ϖ+ϵ-1.    (12)

LEMMA 2.2. Let ϖ, ϖ′, τ, τ′, ϵ, σ ∈ ℂ such that ℜ(ϵ) > 0 and

(σ)>max{(τ),(-ϖ-ϖ+ϵ),(-ϖ-τ+ϵ)}.

Then

(I-ϖ,ϖ,τ,τ,ϵt-σ)(x)=Γ(-τ+σ)Γ(ϖ+ϖ-ϵ+σ)Γ(ϖ+τ-ϵ+σ)Γ(σ)Γ(ϖ-τ+σ)Γ(ϖ+ϖ +τ -ϵ+σ)x-ϖ-ϖ+ϵ-σ,    (13)

The main aim of this paper is to apply the generalized operators of fractional calculus for the GMLTF in order to get certain new image formulas.

2.1. Sumudu Transform

The Sumudu transform is widely used to solve various type of problems in science and engineering and it is introduced by Watugala (see [37, 38]). The details of Sumudu transforms, properties, and its applications the interesting readers can be refer to Asiru [39], Belgacem et al. [40], and Bulut et al. [41].

The Sumudu transform over the set functions

A={f(t)|M,τ1,τ2>0,|f(t)|<Me|t|/τj,if t(-1)j×[0,)},

is defined by

G(u)=S[f(t);u]=0f(ut)e-tdt,u(-τ1,τ2).    (14)

The main aim of this study is to establish the generalized fractional calculus operators and the generalized FKEs involving GMLTF.

Theorem 2.1. Let η, η′, χ, χ′, ϵ, τ, ϖ, λ, γ ∈ ℂ, ℜ(κ) > 0, δ ≠ 0, −1, −2, ⋯ , such that ℜ(τ) > max{0, ℜ(η + η′ − χ − ϵ), ℜ(η′ − χ′)}. Then

(I0+η,η,χ,χ,ϵtτ-1  pEq;δϖ,λ;γ(t))(x)=Γ(δ)j=1qΓ(ωj)Γ(γ)i=1pΓ(κi)xτ-η-η+ϵ-1×p+5Ψq+5[(κi,1)1,p,(γ,1),(τ,1),(τ+ϵ-η-η-χ,1),(τ+χ-η,1),(1,1)(ωj,1)1,q,(δ,1),(γ,ϖ),(τ+χ,1),(τ+ϵ-η-η,1),(τ+ϵ-η-χ,1) |x].

Proof. Applying the definition (7) on the left hand side (l.h.s) of Theorem 2.1,

1=(I0+η,η,χ,χ,ϵtτ-1  pEq;δϖ,λ;γ(t))(x)=(I0+η,η,χ,χ,ϵtτ-1r=0(κ1)r(κ2)r(κp)r(ω1)r(ω2)r,(ωq)r(γ)rtr(δ)rΓ(ϖr+λ))(x)

Changing the order of integration and summation gives

1=r=0(κ1)r(κ2)r(κp)r(ω1)r(ω2)r(ωq)r(γ)r(δ)rΓ(ϖr+λ)(I0+η,η,χ,χ,ϵtτ+r-1)(x)

Applying Lemma 2.1, we get

1=r=0(κ1)r(κ2)r(κp)r(ω1)r(ω2)r(ωq)r(γ)r(δ)rΓ(ϖr+λ)×Γ(τ+r)Γ(τ+r+ϵ-η-η-χ)Γ(τ+r+χ-η)(Γ(τ+r+χ)Γ(τ+r+ϵ-η-η)Γ(τ+r+ϵ-η-χ)xτ+r-η-η+ϵ-1.

Using Γ(x + κ) = (x)kΓ(x), we have

1=xτ-η-η+ϵ-1Γ(δ)j=1qΓ(ωj)Γ(γ)i=1pΓ(κi)r=0i=1pΓ(κi+r)j=1qΓ(ωj+r)     ×xrΓ(γ+r)Γ(τ+r)Γ(τ+r+ϵ-η-η-χ)Γ(τ+r+χ-η)Γ(1+r)Γ(1+r)Γ(δ+r)Γ(ϖr+λ)Γ(τ+χ+r)Γ(τ+ϵ+r-η-η)Γ(τ+ϵ+r-η-χ)

In view of (4), we reached the required result.

Theorem 2.2. Let η, η′, χ, χ′, ϵ, τ, ϖ, λ, γ ∈ ℂ, ℜ(κ) > 0, δ ≠ 0, − 1, −2, ⋯ , such that ℜ(τ) > max{ℜ(χ), ℜ(−η − η′ + ϵ), ℜ(−η − χ′ + ϵ)}. Then

(I-η,η,χ,χ,ϵt-τ  pEq;δϖ,λ;γ(1t))(x)=Γ(δ)j=1qΓ(ωj)Γ(γ)i=1pΓ(κi)x-η-η+ϵ-τ×p+5Ψq+5[(κi,1)1,p,(γ,1),(-χ+τ,1),(η+η-ϵ+τ,1),(η+χ-ϵ+τ,1),(1,1)(ωj,1)1,q,(δ,1),(λ,ϖ),(τ,1),(η-χ+τ,1),(η+η+χ-ϵ+τ,1) |x].

Proof. Applying the definition (7) on the left hand side (l.h.s) of Theorem 2.2,

2=(I-η,η,χ,χ,ϵt-τ  pEq;δϖ,λ;γ(1t))(x)=(I-η,η,χ,χ,ϵt-τr=0(κ1)r(κ2)r(κp)r(ω1)r(ω2)r(ωq)r(γ)rtr(δ)rΓ(ϖr+λ))(x)

Changing the order of integration and summation gives

2=r=0(κ1)r(κ2)r(κp)r(ω1)r(ω2)r(ωq)r(γ)r(δ)rΓ(ϖr+λ)(I-η,η,χ,χ,ϵt-τ-r)(x)

Applying Lemma 2.2, we get

2=r=0(κ1)r(κ2)r(κp)r(ω1)r(ω2)r(ωq)r(γ)r(δ)rΓ(ϖr+λ)×Γ(-χ+τ+r)Γ(η+η-ϵ+τ+r)Γ(η+χ-ϵ+τ+r)Γ(τ+r)Γ(η-χ+τ+r)Γ(η+η+χ-ϵ+τ+r)x-η-η+ϵ-τ-r.

Using Γ(x + r) = (x)rΓ(x), we have

2=x-η-η+ϵ-τΓ(δ)j=1qΓ(ωj)Γ(γ)i=1pΓ(κi)r=0i=1pΓ(κi+r)j=1qΓ(ωj+r)×xrΓ(γ+r)Γ(-χ+τ+r)Γ(η+η-ϵ+τ+r)Γ(η+χ-ϵ+τ+r)Γ(δ+r)Γ(ϖr+λ)Γ(τ+r)Γ(η-χ+τ+r)Γ(η+η+χ-ϵ+τ+r)

In view of (4), we reached the required result.

The following corollaries can derive immediately from Theorems 2.1 and 1.2 with the help of Pochhammer symbol

Corollary 2.1. Let δ = λ = 1 in Theorem 2.1, we get

(I0+η,η,χ,χ,ϵtτ-1  pEq;δϖ,λ;γ(t))(x)=Γ(τ)Γ(τ+ϵ-η-η-χ)Γ(τ+χ-η)Γ(τ+χ)Γ(τ+ϵ-η-η)Γ(τ+ϵ-η-χ)Γ(γ)xτ-η-η+ϵ-1×p+4Fq+4[(κi,1)1,p,ν,τ,τ+ϵ-η-η-χ,τ+χ-η;(ωj,1)1,q,λ,τ+χ,τ+ϵ-η-η,τ+ϵ-η-χ; |x].

Corollary 2.2. If δ = λ = 1 in Theorem 2.1, then

(I-η,η,χ,χ,ϵtτ-1  pEq;δϖ,λ;γ(1t))(x)=Γ(τ-χ)Γ(η+η-ϵ+τ)Γ(η+χ-ϵ+τ)Γ(τ)Γ(η-χ+τ)Γ(η+η+χ-ϵ+τ)Γ(γ)x-τ-η-η+ϵ-1×p+4Fq+4[(κi,1)1,p,γ,τ-χ,η+η-ϵ+τ,η+χ-ϵ+τ;(ωj,1)1,q,λ,τ,η-χ+τ,η+η-ϵ+τ; |x].

In the next section, we derived the generalized FKEs and we consider the Sumudu transform methodology to achieve the results.

3. Generalized Fractional Kinetic Equations Involving GMLTF

The generalized fractional kinetic equations (FKEs) involving the GMLTF with the Sumudu transform is derived in this section. The FKEs are studied widely in many papers [4245].

Let 𝔎 = (𝔎t) be the arbitrary reaction defined by a time-dependent quantity. The destruction 𝔡 and production 𝔭 depend on the quantity 𝔎 itself: 𝔡 = 𝔡(𝔎) or 𝔭 = 𝔭(𝔎) [see [42]]. The fractional differential equation can be expressed by

d𝔎dt=-𝔡(𝔎t)+𝔭(𝔎t),    (15)

where 𝔎t described by 𝔎t(t*)=𝔎(t-t*),t*>0 (see, [42]). A special case of (15) is

d𝔎idt=-𝔠i𝔎i(t),    (16)

with 𝔎i(t = 0) = 𝔎0, 𝔠i > 0 and the solution of (16) is

𝔎i(t)=𝔎0e-𝔠it.    (17)

Performing the integration of (16) leads to

𝔎(t)-𝔎0=-𝔠 0𝔇t-1𝔎(t),    (18)

where  0𝔇t-1 is the particular case of Riemann–Liouville (R-L) integral operator and 𝔠 is a constant. The fractional form of (18) is (see [42])

𝔎(t)-𝔎0=-𝔠μ 0𝔇t-μ𝔎(t),    (19)

where  0𝔇t-μ is given by

 0𝔇t-μf(t)=1Γ(μ)0t(t-s)μ-1f(s)ds,(μ)>0.    (20)

Theorem 3.1. For ϖ, λ, γ ∈ ℂ, δ ≠ 0, −1, −2, ⋯ , d > 0, ϵ > 0 then the solution of

𝔎(t)-𝔎0  pEq;δϖ,λ;γ(t)=-dϵ 0𝔇t-ϵ𝔎(t)    (21)

is given by

𝔎(t)=𝔎0n=0(κ1)n(κp)n(ω1)n(ωq)n(γ)nn!(δ)nΓ(ϖn+λ)tn-1Eϵ,n(-dϵtϵ)    (22)

Proof. The Sumudu transform (ST) of the R-L fractional operator is

S{ 0𝔇tϵg(t);u}=uϵG(u)    (23)

where G(u) is defined in (14). Now, applying the ST on the both sides of (21) and using (7) and (23), we have

S{𝔎(t);u}-𝔎0S{ pEq;δϖ,λ;γ(t);u}=S{-dϵ 0𝔇t-ϵ𝔎(t);u},    (24)

which gives

𝔎*(u)=𝔎0 (0e-tn=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)n(ut)n(δ)rΓ(ϖn+λ)dt )   -dϵuϵ𝔎*(u),    (25)

which implies that

𝔎*(u)[1+dϵuϵ]=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)n(u)n(δ)nΓ(ϖn+λ)0e-ttndt.    (26)

After some simple calculation, we get

𝔎*(u)=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n  (γ)n(δ)nΓ(ϖn+λ)(un)n!Γ(n+1)  × s=0[(-du)ϵ]s .    (27)

The inverse ST of (27) and using the formula S-1{uϵ;t}=tϵ-1Γ(ϵ), ℜ(ϵ) > 0 gives

𝔎(t)=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)n(δ)nΓ(ϖn+λ)Γ(n+1)  ×s=0(-1)sdϵstϵs+n-1Γ(ϵs+n).    (28)

In view of the Mittag-Leffler function definition, we arrived the needful result.

Theorem 3.2. For ϖ, λ, γ ∈ ℂ, δ ≠ 0, −1, −2, ⋯ , d > 0, ϵ > 0 then the equation

𝔎(t)-𝔎 0pEq;δϖ,λ;γ(dϵtϵ)=-dϵ 0𝔇t-ϵ𝔎(t)    (29)

have the following solution

𝔎(t)=𝔎0n=0(κ1)n(κp)n(ω1)n(ωq)n(γ)nΓ(ϵn+1)(δ)nΓ(ϖn+λ)(d)ϵntn-1Eϵ,n(-dϵtϵ)    (30)

Proof. Applying the Sumudu transform on the both sides of (29)

S{𝔎(t);u}-𝔎0S{ pEq;δϖ,λ;γ(dϵtϵ);u}=S{-dϵ 0𝔇t-ϵ𝔎(t);u},    (31)

and using (7) and (23), we get

𝔎*(u)=𝔎0 (0e-tn=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)n(udϵtϵ)n(δ)nΓ(ϖn+λ)dt )   -dϵuϵ𝔎(u),    (32)

which gives

𝔎(u)[1+dϵuϵ]   =𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)nundϵn(δ)nΓ(ϖn+λ)   0e-ttϵndt,    (33)

which can be simplified as

𝔎(u)=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)ndϵn(δ)nΓ(ϖn+λ)Γ(ϵn+1)  ×{ undϵns=0[(-du)ϵ]s }.    (34)

Taking the Sumudu inverse of (34) and using S-1{uϑ;t}=tϑ-1Γ(ϑ), we get

𝔎(t)=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)ndϵntn-1(δ)nΓ(ϖn+λ)Γ(ϵn+1)  ×s=0(-1)sdϵstϵsΓ(ϵs+1).    (35)

In view of the definition of the Mittag-Leffler function, we get the required result.

Theorem 3.3. For ϖ, λ, γ ∈ ℂ, δ ≠ 0, −1, −2, ⋯ , d > 0, ϵ > 0 and ad then the equation

𝔎(t)-𝔎 0pEq;δϖ,λ;γ(dϵtϵ)=-aϵ 0𝔇t-ϵ𝔎(t)    (36)

have the following solution

𝔎(t)=𝔎0n=0(κ1)n(κp)n(ω1)n(ωq)n(γ)nΓ(ϵn+1)(δ)nΓ(ϖn+λ)(d)ϵntn-1Eϵ,n(-aϵtϵ)    (37)

Proof. Applying the Sumudu transform on the both sides of (36)

S{𝔎(t);u}-𝔎0S{ pEq;δϖ,λ;γ(dϵtϵ);u}=S{-aϵ 0𝔇t-ϵ𝔎(t);u},    (38)

and using (7) and (23), we get

𝔎*(u)=𝔎0 (0e-tn=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)n(udϵtϵ)n(δ)nΓ(ϖn+λ)dt )-aϵuϵ𝔎(u),    (39)

which gives

𝔎(ρ)[1+aϵuϵ]=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)nundϵn(δ)nΓ(ϖn+λ)0e-ttϵndt,    (40)

which can be simplified as

𝔎(u)=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)ndϵn(δ)nΓ(ϖn+λ)Γ(ϵn+1)  ×{ undϵns=0[(-au)ϵ]s }.    (41)

Taking the Sumudu inverse of (41) and using S-1{uϑ;t}=tϑ-1Γ(ϑ), we get

𝔎(t)=𝔎0n=0(κ1)n(κ2)n(κp)n(ω1)n(ω2)n(ωq)n(γ)ndϵntn-1(δ)nΓ(ϖn+λ)Γ(ϵn+1)  ×s=0(-1)saϵstϵsΓ(ϵs+1).    (42)

In view of the definition of the Mittag-Leffler function, we get the required result.

If we take δ = 1 in Theorem 1.3, we get the generalized FKE involving K − function as follows:

Corollary 3.1. For ϖ, λ, γ ∈ ℂ, δ ≠ 0, −1, −2, ⋯ , d > 0, ϵ > 0 then

𝔎(t)-𝔎0  pEq;1ϖ,λ;γ(t)=-dϵ 0𝔇t-ϵ𝔎(t)    (43)

is given by

𝔎(t)=𝔎0n=0(κ1)n(κp)n(ω1)n(ωq)n(γ)nΓ(ϖn+λ)tn-1Eϵ,n(-dϵtϵ)    (44)

If we take δ = 1, p = q = 0 in Theorem 3.1, we have the generalized FKE involving the Prabhakar function:

Corollary 3.2. For ϖ, λ, γ ∈ ℂ, δ ≠ 0, −1, −2, ⋯ , d > 0, ϵ > 0 then

𝔎(t)-𝔎0  0E0;1ϖ,λ;γ(t)=-dϵ 0𝔇t-ϵ𝔎(t)    (45)

is given by

𝔎(t)=𝔎0n=0(γ)nΓ(ϖn+λ)tn-1Eϵ,n(-dϵtϵ)    (46)

If we choose δ = 1, p = q = 0 and γ = 1 in Theorem 3.1, then the generalized FKE involving the Wiman function:

Corollary 3.3. For ϖ, λ ∈ ℂ, δ ≠ 0, −1, −2, ⋯ , d > 0, ϵ > 0 then

𝔎(t)-𝔎0  0E0;1ϖ,λ;1(t)=-dϵ 0𝔇t-ϵ𝔎(t)    (47)

is given by

𝔎(t)=𝔎0n=01Γ(ϖn+λ)tn-1Eϵ,n(-dϵtϵ)    (48)

If we choose δ = 1, p = q = 0 and γ = 1 in Theorem 3.1, then we get the generalized FKE involving the Mittag-Leffler function:

Corollary 3.4. For ϖ ∈ ℂ, δ ≠ 0, −1, −2, ⋯ , d > 0, ϵ > 0 then

𝔎(t)-𝔎0  0E0;1ϖ,1;1(t)=-dϵ 0𝔇t-ϵ𝔎(t)    (49)

is given by

𝔎(t)=𝔎0n=01Γ(ϖn+1)tn-1Eϵ,n(-dϵtϵ)    (50)

Remark 3.1. By choosing the suitable parameters in Theorems 3.2 and 3.3, one can derive the generalized FKEs of GMLTF as similar as above corollaries.

4. Conclusion

The generalized fractional integrations of the generalized Mittag-Leffler type function is studied in this paper. The obtained results are expressed in terms of the generalized Wright hypergeometric function and generalized hypergeometric functions. To show the potential application of GMLTF, the solutions of fractional kinetic equations are derived with the help of Sumudu transform. The results obtained in this study have significant importance as the solution of the equations are general and can derive many new and known solutions of FKEs involving various type of special functions.

Data Availability Statement

All datasets generated for this study are included in the article.

Author Contributions

The author confirms being the sole contributor of this work and has approved it for publication.

Conflict of Interest

The author declares that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

References

1. Srivastava HM, Choi J. Zeta and q-Zeta Functions and Associated Series and Integrals. Amsterdam; London; New York, NY: Elsevier Science Publishers (2012).

Google Scholar

2. Rainville ED. Special Functions. New York, NY: Macmillan (1960).

Google Scholar

3. Fox C. The asymptotic expansion of generalized hypergeometric functions. Proc Lond Math Soc. (1928) 27:389–400.

4. Kilbas AA, Saigo M, Trujillo JJ. On the generalized Wright function. Fract Calc Appl Anal. (2002) 5:437–60.

Google Scholar

5. Wright EM. The asymptotic expansion of integral functions defined by Taylor series. Philos Trans Roy Soc Lond A. (1940) 238:423–51.

Google Scholar

6. Wright EM. The asymptotic expansion of the generalized hypergeometric function. Proc Lond Math Soc. (1940) 46:389–408.

Google Scholar

7. Mittag-Leffler GM. Sur la representation analytiqie d'une fonction monogene cinquieme note. Acta Math. (1905) 29:101–81.

Google Scholar

8. Wiman A. Uber den fundamental satz in der theorie der funktionen Eα(z). Acta Math. (1905) 29:191–201.

Google Scholar

9. Rahman G, Baleanu D, Al Qurashi M, Purohit SD, Mubeen S, Muhammad A. The extended Mittag-Leffler function via fractional calculus. J Nonlinear Sci Appl. (2017) 10:4244–53. doi: 10.22436/jnsa.1.19

CrossRef Full Text | Google Scholar

10. Nisar KS, Rahman G, Baleanu D, Mubeen S, Arshad M. The (k,s)-fractional calculus of k-Mittag-Leffler function. Adv Differ Equat. (2017) 2017:118. doi: 10.1186/s13662-017-1176-4

CrossRef Full Text | Google Scholar

11. Kumar S, Kumar A, Momani S, Aldhaifallah M, Nisar KS. Numerical solutions of nonlinear fractional model arising in the appearance of the stripe patterns in two-dimensional systems. Adv Differ Equat. (2019) 2019:413. doi: 10.1186/s13662-019-2334-7

CrossRef Full Text | Google Scholar

12. Singh J, Kumar D, Swroop R, Kumar S. An efficient computational approach for time-fractional Rosenau–Hyman equation. Neural Comput Appl. (2018) 30:3063–70. doi: 10.1007/s00521-017-2909-8

CrossRef Full Text | Google Scholar

13. Bhatter S, Mathur A, Kumar D, Nisar KS, Singh J. Fractional modified Kawahara equation with Mittag–Leffler law. Chaos Solit Fract. (2019) 2019:109508. doi: 10.1016/j.chaos.2019.109508

CrossRef Full Text | Google Scholar

14. Nisar KS. Fractional integrations of a generalized Mittag-Leffler type function and its application. Mathematics. (2019) 7:1230. doi: 10.3390/math7121230

CrossRef Full Text | Google Scholar

15. Sharma K. Application of fractional calculus operators to related Areas. Gen Math Notes. (2011) 7:33–40. doi: 10.1142/9789814340250_0005

CrossRef Full Text

16. Prabhakar TR. A singular integral equation with a generalized Mittag-Leffler function in the Kernel. Yokohama Math J. (1971) 19:7–15.

Google Scholar

17. Srivastava HM, Tomovski Z. Fractional calculus with an integral operator containing a generalized Mittag–Leffler function in the kernel. Appl Math Comput. (2009) 211:198–210. doi: 10.1016/j.amc.1.055

CrossRef Full Text | Google Scholar

18. Odibat Z, Kumar S. A robust computational algorithm of homotopy asymptotic method for solving systems of fractional differential equations. J Comput Nonlinear Dyn. (2019) 14:081004. doi: 10.1115/1.4043617

CrossRef Full Text | Google Scholar

19. Singh J, Kumar D, Baleanu D. New aspects of fractional Biswas-Milovic model with Mittag-Leffler law. Math Model Nat Phenom. (2019) 14:303. doi: 10.1051/mmnp/2018068

CrossRef Full Text | Google Scholar

20. Yang XJ. New general fractional-order rheological models with kernels of Mittag-Leffler functions. Rom Rep Phys. (2017) 69:118.

Google Scholar

21. Yang XJ, Gao F, Tenreiro Machado JA, Baleanu D. A new fractional derivative involving the normalized sinc function without singular kernel. Eur Phys J Spec Top. (2017) 226:3567–75. doi: 10.1140/epjst/e2018-00020-2

CrossRef Full Text | Google Scholar

22. Gao W, Ghanbari B, Baskonus HM. New numerical simulations for some real world problems with Atangana–Baleanu fractional derivative. Chaos Solit Fract. (2019) 128:34–43. doi: 10.1016/j.chaos.1.037

CrossRef Full Text | Google Scholar

23. Araci S, Rahman G, Ghaffar A, Azeema, Nisar KS. Fractional calculus of extended Mittag-Leffler function and its applications to statistical distribution. Mathematics. (2019) 7:248. doi: 10.3390/math7030248

CrossRef Full Text | Google Scholar

24. Andrić M, Farid G, Pećarić J. A further extension of Mittag-Leffler function. Fract Calc Appl Anal. (2018) 21:1377–95. doi: 10.1515/fca-2018-0072

CrossRef Full Text | Google Scholar

25. Rahman G, Nisar KS, Choi J, Mubeen S, Arshad M. Formulas for Saigo fractional integral operators with 2F1 generalized k -Struve functions. Far East J Math Sci. (2017) 102:55–66. doi: 10.17654/MS102010055

CrossRef Full Text | Google Scholar

26. Kumar D, Singh J, Baleanu D. A new analysis of the Fornberg-Whitham equation pertaining to a fractional derivative with Mittag-Leffler-type kernel. Eur Phys J Plus. (2018) 133:70. doi: 10.1140/epjp/i2018-11934-y

CrossRef Full Text | Google Scholar

27. Choi J, Mubeen S, Nisar KS, Choi J. Certain extended special functions and fractional integral and derivative operators via an extended beta function. Nonlinear Funct Anal Appl. (2019) 24:1–13. Available online at: http://nfaa.kyungnam.ac.kr/journal-nfaa

Google Scholar

28. Kiryakova V. All the special functions are fractional differintegrals of elementary functions. J Phys A. (1977) 30:5085–103.

Google Scholar

29. Miller KS, Ross B. An Introduction to the Fractional Calculus and Fractional Differential Equations. New York, NY: Wiley (1993).

30. Srivastava HM, Lin SD, Wang PY. Some fractional-calculus results for the H-function associated with a class of Feynman integrals. Russ J Math Phys. (2006) 13:94–100. doi: 10.1134/S1061920806010092

CrossRef Full Text | Google Scholar

31. Marichev OI. Volterra equation of Mellin convolution type with a Horn function in the kernel. Izvest Akad Nauk BSSR Ser Fiziko Mat Nauk. (1974) 1:128–9.

Google Scholar

32. Saigo M, Maeda N., Editors. More generalization of fractional calculus. Transform methods and special functions. In: Proceedings of the 2nd International Workshop, Varna (1996).

Google Scholar

33. Baleanu D, Kumar D, Purohit SD. Generalized fractional integrals of product of two H-functions and a general class of polynomials. Int J Comput Math. (2016) 93:1320–9. doi: 10.1080/1.1045886

CrossRef Full Text | Google Scholar

34. Mondal SR, Nisar KS. Marichev-Saigo-Maeda fractional integration operators involving generalized Bessel functions. Math Probl Eng. (2014) 2014:11. doi: 10.1155/2014/274093

CrossRef Full Text | Google Scholar

35. Purohit SD, Suthar DL, Kalla SL. Marichev-Saigo-Maeda fractional integration operators of the Bessel function. Le Mat. (2012) 67:21–32. doi: 10.4418/1.1.2

CrossRef Full Text | Google Scholar

36. Kataria KK, Vellaisamy P. The generalized k-Wright function and Marichev-Saigo-Maeda fractional operators. J Anal. (2015) 23:75–87.

Google Scholar

37. Watugala GK. Sumudu transform:a new integral transform to solve differential equations and control engineering problems. Int J Math Edu Sci Tech. (1993) 24:35–43.

Google Scholar

38. Watugala GK. The Sumudu transform for functions of two variables. Math Eng Ind. (2002) 8:293–302.

39. Asiru MA. Sumudu transform and the solution of integral equation of convolution type. Int J Math Educ Sci Technol. (2001) 32:906–10. doi: 10.1080/002073901317147870

CrossRef Full Text | Google Scholar

40. Belgacem FBM, Karaballi AA, Kalla SL. Analytical investigations of the Sumudu transform and applications to integral production equations. J Math Probl Eng. (2003) 3:103–18. doi: 10.1155/S1024123X03207018

CrossRef Full Text | Google Scholar

41. Bulut H, Baskonus HM, Belgacem FB. The analytical solution of some fractional ordinary differential equations by the Sumudu transform method. Abstr Appl Anal. (2013) 2013:6. doi: 10.1155/2013/203875

CrossRef Full Text | Google Scholar

42. Haubold HJ, Mathai AM. The fractional kinetic equation and thermonuclear functions. Astrophys Space Sci. (2000) 327:53–63. doi: 10.1023/A:1002695807970

CrossRef Full Text | Google Scholar

43. Saxena RK, Mathai AM, Haubold HJ. On fractional kinetic equations. Astrophys Space Sci. (2002) 282:281–7. doi: 10.1023/A:1021175108964

CrossRef Full Text | Google Scholar

44. Saxena RK, Mathai AM, Haubold HJ. On generalized fractional kinetic equations. Phys A. (2004) 344:657–64. doi: 10.1016/j.physa.1.048

CrossRef Full Text | Google Scholar

45. Nisar KS, Purohit SD, Mondal SR. Generalized fractional kinetic equations involving generalized Struve function of the first kind. J King Saud Univ Sci. (2016) 28:167–71. doi: 10.1016/j.jksus.1.005

CrossRef Full Text | Google Scholar

Keywords: The Mittag-Leffler type function, fractional calculus, fractional kinetic equations; MSC [2000]: 33C05; 33C20; 33E12; 26A33; 44A20; 35Qxx, riemam-liouville derivative, special function

Citation: Nisar KS (2020) Generalized Mittag-Leffler Type Function: Fractional Integrations and Application to Fractional Kinetic Equations. Front. Phys. 8:33. doi: 10.3389/fphy.2020.00033

Received: 21 December 2019; Accepted: 05 February 2020;
Published: 28 February 2020.

Edited by:

Devendra Kumar, University of Rajasthan, India

Reviewed by:

Haci Mehmet Baskonus, Harran University, Turkey
Yudhveer Singh, Amity University Jaipur, India

Copyright © 2020 Nisar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Kottakkaran Sooppy Nisar, n.sooppy@psau.edu.sa