Abstract
This paper investigates the relationship between the commutativity of rings and the properties of their multiplicative generalized derivations. Let be a ring with a semiprime ideal . A map is classified as a multiplicative generalized derivation if there exists a map such that for all . This study focuses on semiprime ideals that admit multiplicative generalized derivations and G that satisfy certain differential identities within . By examining these conditions, the paper aims to provide new insights into the structural aspects of rings, particularly their commutativity in relation to the behavior of such derivations.
MSC:
16W20; 16W25; 16U70; 16U80; 16N60
1. Introduction
Let be an associative ring with center Z. A proper ideal of is termed prime if for any elements , the inclusion implies that either or . Equivalently, the ring is said to be prime if , the zero ideal, is a prime ideal. This is to say, is prime if implies or .
In addition to prime ideals, the concept of semiprime ideals is also fundamental in ring theory. A proper ideal is semiprime if for any , the condition implies . The ring is semiprime if is a semiprime ideal. While every prime ideal is semiprime, the converse is not generally true. Therefore, it is important to investigate the structure and properties of semiprime ideals, particularly when considering multiplicative generalized semiderivations. For any the symbol stands for the commutator , and the symbol denotes the anti-commutator For any it is expressed as , , and for , it is expressed as
The study of derivations in rings has a rich history, originating with Posner’s seminal work in 1957 []. A derivation on is an additive map satisfying
Derivations are critical in understanding the internal structure of rings, particularly in the context of prime rings, where they can impose strong commutativity conditions.
Building on Posner’s work, Brešar [], introduced the concept of generalized derivations. A map is called a generalized derivation if there exists a derivation such that
Familiar examples of generalized derivations are derivations and generalized inner derivations, and the latter include left multipliers and right multipliers (i.e., for all ).
The commutativity of prime or semiprime rings with derivation was initiated by Posner in []. Thereafter, several authors have proved commutativity theorems of prime or semiprime rings with derivations. In [], the notion of multiplicative derivation was introduced by Daif motivated by Martindale in []. Daif [] introduced this concept and explored its implications in prime and semiprime rings. A multiplicative derivation satisfies the condition
but unlike a traditional derivation, may not be additive. In [], Goldman and Semrl gave the complete description of these maps. We have the ring of all continuous (real or complex valued) functions, and define a map such as
It is clear that is a multiplicative derivation, but is not additive. Inspired by the definition multiplicative derivation, the notion of multiplicative generalized derivation was extended by Daif and Tamman El-Sayiad in [] as follows: is called a multiplicative generalized derivation if there exists a derivation such that for all
Dhara and Ali [] provided a slight generalization of this definition by allowing to be any map, not necessarily an additive map or derivation. It is worth noting that if is a semiprime ring, then in this case must be a multiplicative derivation, because for any ,
This implies that . This gives that is a multiplicative derivation. Further, every generalized derivation is a multiplicative generalized derivation. But the converse is not true in general (see example ([], Example 1.1)). Hence, one may observe that the concept of multiplicative generalized derivations includes the concepts of derivations, multiplicative derivation, and the left multipliers. So, it should be interesting to extend some results concerning these notions to multiplicative generalized derivations.
A functional identity is an identity relation in an algebra involving arbitrary elements, similar to a polynomial identity, but also incorporating functions that are treated as unknowns (see []). In [], Ashraf and Rehman showed that a prime ring with a nonzero ideal I must be commutative if it admits a derivation satisfying either of the properties or for all . In [], the authors explored the commutativity of prime ring , which satisfies any one of the properties when is a generalized derivation. In [], studied the commutativity of such a prime ring if anyone of the following is hold: or where and G are generalized derivations.
Let S be a nonempty subset of . A mapping from to is called centralizing on S if for all and is called commuting on S if for all . This definition has been generalized as: a map is called a -commuting map on S if for all and some . In particular, if , then is called a commuting map on S. Note that every commuting map is a -commuting map. But the converse is not true in general. Take some a set of has no zero such that ; then is a -commuting map but it is not a commuting map.
The significance of these derivations, especially in the context of commutativity, has been widely studied. A mapping from to is said to be commutativity-preserving on a subset if implies for all . The concept of strong commutativity-preserving (SCP) maps, where for all , has also been extensively explored. There is a growing body of literature on strong commutativity-preserving (SCP) maps and derivations. In [], Bell and Daif were the first to investigate the derivation of SCP maps on the ideal of a semiprime ring. Ma and Xu extended this study to generalized derivations in []. There are some recent articles that studied identities with multiplicative generalized derivations (see [,,,,]). In [], Gölbaşi Additionally, Koç and Gölbaşi generalized these results to multiplicative generalized derivations on semiprime rings in []. In [], Samman demonstrated that an epimorphism of a semiprime ring is strong commutativity-preserving if and only if it is centralizing. Researchers have extensively explored derivations and SCP mappings within the framework of operator algebras, as well as in prime and semiprime rings.
This paper investigates the commutativity conditions in rings that admit multiplicative generalized derivations, particularly in the context of semiprime ideals. By extending existing results and introducing new findings, this study contributes to a deeper understanding of the interplay between derivations, semiprime ideals, and commutativity in ring theory.
2. Main Results
We will make some extensive use of the basic commutator identities:
Theorem 1.
Let be a ring with Π as a semiprime ideal of R. Suppose that admits a multiplicative generalized derivation ϕ associated with a nonzero map σ. If any of the following conditions is satisfied for all :
- (i)
- (ii)
- (iii)
- (iv)
then for all .
Proof.
Replacing by in (13), we have
Right multiplying by the expression (13), we have
If the last two expressions are used, the following is found
That is,
Writing by in the last expression, we have
Right multiplying by the expression (15), we have
If the last two expressions are used, the following is found
This expression is the same as expression (7). Using the same techniques, we get the required result.
That is,
Replacing by in this expression, we have
and so
Right multiplying by the expression (16), we see that
Subtracting (17) from (18), we arrive at
This expression is the same as expression (4), and hence applying the same lines, we complete the proof.
By the hypothesis, we have
That is,
Replacing by in this expression, we have
and so
Right multiplying by the expression (1), we see that
Subtracting (2) from (3), we arrive at
Replacing by in the last expression, we have
Right multiplying by the expression (4), we get
Subtracting (5) from (6), we arrive at
Writing by in (7), we obtain that
Right multiplying by the expression (7), we get
Subtracting (8) from (9), we arrive at
Writing by in (7), we obtain that
Left multiplying by the expression (10), we have
Subtracting (11) from (12), we arrive at
Since is a semiprime ideal, we obtain that
Thus, for all
- (ii)
- By the hypothesis, we have
- (iii)
- By the hypothesis, we have
- (iv)
- By the hypothesis, we have
Theorem 2.
Let be a 2-torsion-free ring with Π as a semiprime ideal of . Suppose that admits a multiplicative generalized derivation ϕ associated with a nonzero multiplicative derivation σ. If for all , then σ is a Π-commuting map on .
Proof.
By the hypothesis, we have
Replacing by in the last expression, we have
That is,
and so
By the hypothesis, we have
Replacing by in this expression, we have
Writing by in (20), we have
Using expression (20), we obtain that
Replacing by in (21) this expression, we have
Writing by in, we get
Left multiplying (22) by , we get
Subtracting (23) from (24), we get
Since is a semiprime ideal of we conclude that
and so is commuting map on □
Theorem 3.
Let be a ring with Π a semiprime ideal of R. Suppose that admits multiplicative generalized derivations associated with the multiplicative derivation σ, and any nonzero map h, respectively. If any of the following conditions is satisfied for all
- (i)
- ,
- (ii)
- (iii)
- (iv)
then σ is commuting map on .
Proof.
Replacing by in the hypothesis, we obtain
Using hypothesis, we have
and so
Taking by in (26), we have
Replacing by in (26), we get
Subtracting the above expression from (27), we find
That is
Replacing by in this expression, we get
Taking by in the last expression, we have
Since is semiprime ideal, we get
On the other hand, replacing by in (28), we get
Right multiplying by in (28), we have
Subtracting the above expression from (30), we find
That is,
Replacing by in this expression, we get
Since is semiprime ideal, we have
and so
Using for all we get
Replacing by in the last expression, we obtain
Since is semiprime ideal, we have
Subtracting (29) from (31), we arrive at for all . Hence, is commuting. This completes the proof.
Replacing by in the above expression, we have
Using the hypothesis, we have
Taking by in (32), we get
Using (32), we have
Replacing t by in this expression, we get
Right multiplying by in this expression, we have
Since is semiprime ideal, we have for all
Replacing by in the above expression, we have
Using the hypothesis, we have
This expression is the same as (32) in . Applying the same lines, we find that is commuting. This completes the proof. □
By the hypothesis, we have
Replacing by in the above expression, we have
Using the hypothesis, we find that
Taking by in (25), we get
Using (25), we have
Multiplying the last expression on the right by we have
That is,
Since is semiprime ideal, we get
Multiplying the last expression on the right by we have
Since is semiprime ideal, we get for all That is, for all . Hence, is commuting on .
- (ii)
- By the hypothesis, we have
It is proved analogously using for all
- (iii)
- By the hypothesis, we have
On the other hand, taking by in (32), we have
Replacing by in (32), we have
Subtracting (33) from (34), we arrive at
Writing by in the last expression, we have
Replacing by in the above expression, we have
Since is semiprime ideal, we have for all Hence, we conclude that for all , and so is commuting.
- (iv)
- By the hypothesis, we have
Definition 1.
An additive mapping is called a multiplicative right generalized derivation if there exists a map such that
and ϕ is called a multiplicative left generalized derivation if there exists a map such that
ϕ is said to be a multiplicative generalized derivation with associated map σ if it is both a multiplicative left and right generalized derivation with associated derivation σ.
Theorem 4.
Let be a ring with Π a prime ideal of R. Suppose that admits a multiplicative left generalized derivation ϕ associated with a nonzero map If any of the following conditions is satisfied for all
- (i)
- (ii)
- (iii)
- (iv)
then ϕ is commuting map on
Proof.
Replacing by in the above expression, we get
and so,
Using the hypothesis, we get
Taking by in the above expression and this expression, we have
and so
This expression is the same as (35) in the proof of . Using the same arguments there, we get the required result.
Replacing by in the above expression, we get
and so,
Using the hypothesis, we get
Taking by , in the above expression and this expression, we have
and so
Replacing by in this expression, we obtain
and so,
Using the hypothesis, we get
Taking by in the above expression and using this expression, we have
This expression is the same as (35) in the proof of . Using the same arguments in there, we obtained the required result. □
By the hypothesis, we get
Replacing by in this expression, we obtain
and so,
Using the hypothesis, we get
Taking by in the above expression and using this expression, we have
Replacing by in (35), we have
Since is prime ideal, we get
Assume that there exists such that Then By the hypothesis, we have for all
That is
Using we have Since is prime, we obtain that which is a contradiction. In both cases, for all is obtained.
- (ii)
- Assume that
- (iii)
- By the hypothesis, we have
This expression is the same as (35) in the proof of . By the same techniques, we get the required result.
- (iv)
- By the hypothesis, we get
3. Conclusions
In this paper, we explored the structure and commutativity of semiprime rings under the action of multiplicative generalized derivations. Our investigation extends previous results in the literature by establishing new conditions under which a semiprime ring becomes commutative when admitting a multiplicative generalized derivation. These findings contribute to a deeper understanding of the interaction between multiplicative generalized derivations and the structural properties of rings. Moreover, our work broadens existing commutativity theorems and opens new avenues for further research in ring theory, particularly regarding the broader class of multiplicative generalized derivations and their impact on algebraic structures. These results lay the groundwork for future studies, with potential applications in operator algebras, noncommutative geometry, and other mathematical fields where ring structures play a central role.
Author Contributions
Conceptualization, E.K.S., A.Y.H., Ö.G. and N.u.R.; Methodology, E.K.S., A.Y.H., Ö.G. and N.u.R.; Writing—original draft, E.K.S., A.Y.H., Ö.G. and N.u.R.; Writing—review & editing, E.K.S., A.Y.H., Ö.G. and N.u.R. All authors contributed equally to this work. All authors have read and agreed to the published version of the manuscript.
Funding
The authors extend their appreciation to the Deanship of Research and Graduate Studies at King Khalid University for funding this work through Large Research Project under grant number RGP2/293/45.
Institutional Review Board Statement
Not applicable.
Informed Consent Statement
Not applicable.
Data Availability Statement
All data required for this article are included within this article.
Acknowledgments
The authors are greatly indebted to the referee for their valuable suggestions and comments, which have immensely improved the article.
Conflicts of Interest
The authors declare no conflicts of interest.
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