Derivation of Entropy as a Topological Operad

Journal of Generalized Lie Theory and Applications

ISSN: 1736-4337

Open Access

Commentary - (2022) Volume 16, Issue 12

Derivation of Entropy as a Topological Operad

Scott Morrison*
*Correspondence: Scott Morrison, Department of Basic Research, University of California, Berkeley, CA 94704, USA, Email:
Department of Basic Research, University of California, Berkeley, CA 94704, USA

Received: 28-Nov-2022, Manuscript No. glta-23-90864; Editor assigned: 30-Nov-2022, Pre QC No. P-90864; Reviewed: 14-Dec-2022, QC No. Q-90864; Revised: 20-Dec-2022, Manuscript No. R-90864; Published: 28-Dec-2022 , DOI: 10.37421/1736-4337.2022.16.362
Citation: Morrison, Scott. “Derivation of Entropy as a Topological Operad.” J Generalized Lie Theory App 16 (2022): 362.
Copyright: © 2022 Morrison S. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


A small connection exists between information theory, algebra and topology: Shannon entropy and derivations of the operad of topological simplices are both correlated. Operads and their repres entations, using topological simplices and the real line as examples, are briefly discussed in the introduction. A general definition of a derivation of an operad with values in an abelian bimodule over the operad is then provided. The main result is that every derivation of the operad of topological simplices is defined by Shannon entropy and that there is a point at which it is given by a constant multiple of Shannon entropy for each derivation. We demonstrate that this is consistent with and heavily relies on a well-known 1956 description of entropy by Faddeev and a more recent variation by Leinster [1].


However, the aforementioned framework appears to be inadequate for other invariants similar to TQFT but not simple. In Ozsváth–Szabó/Seiberg– Witten theory, for instance, the gluing rule for 3-manifolds uses a tensor product over an A-1 category for 2-manifolds. In these theories and the Khovanov homology, long exact sequences are important computational tools; however, the colimit construction breaks exactness. Incorporating concepts from derived categories into the aforementioned framework is desirable for these and other reasons.

Operad theory is a branch of mathematics that deals with the study of algebraic structures known as operads. Operads are abstract structures that capture the notion of a collection of operations that can be composed in various ways to form more complex operations. In this article, we will explore the basics of operad theory, including its origins, the key concepts involved and some of its important applications in mathematics and beyond. Operad theory emerged from the study of algebraic topology, a field that deals with the properties of spaces and their invariants. In the 1960s and 1970s, mathematicians such as Alexandre Grothendieck and Daniel Quillen introduced the concept of a "homotopical algebra" to study algebraic structures in a more flexible and geometrically intuitive way.

One of the key insights in homotopical algebra was the notion of an "algebra over an operad," which is a generalization of the concept of an algebra over a monad or a functor. An operad can be thought of as a collection of operations that can be composed in various ways, much like the way functions can be composed in algebra. However, unlike functions, these operations can have multiple inputs and outputs and can be composed in a non-associative or non-commutative way. The key idea behind operad theory is to study the properties of these operads and the algebras that they give rise to. This involves developing a new algebraic language that can describe these structures in a precise and rigorous way.

One of the fundamental concepts in operad theory is that of a "symmetric monoidal category." This is a category equipped with a tensor product that satisfies certain axioms, such as associativity, commutativity and the existence of a unit element. Symmetric monoidal categories provide a natural framework for studying operads, since they allow us to describe the composition of operations in terms of tensor products and other categorical constructions. Another important concept in operad theory is that of a "multisorted operad." This is an operad that allows for operations of different "sorts" or "types," which can have different numbers of inputs and outputs. Multisorted operads are particularly useful in applications to algebraic geometry and homotopy theory, where different sorts of operations can correspond to different geometric or topological features.

Operads can also be equipped with additional structure, such as a grading or a differential. A graded operad is one in which the operations are assigned a degree or grading, which allows us to keep track of the homological or cohomological properties of the associated algebra. A differential operad is one in which the operations are equipped with a differential, which satisfies certain axioms and allows us to study the homological properties of the associated algebraic structures. Operad theory has numerous applications in mathematics and beyond. In algebraic topology, operads play a fundamental role in the study of homotopy algebras, which are algebraic structures that arise from geometric objects such as loop spaces and configuration spaces. Operad theory provides a powerful tool for describing these structures and understanding their properties [2-5].


In algebraic geometry, operads are used to study moduli spaces, which are spaces that parameterize families of algebraic objects. Multisorted operads provide a natural framework for describing the structure of these moduli spaces and understanding their geometric properties. In theoretical physics, operads have been used to study the structure of field theories, which describe the behavior of physical systems at different scales. The concept of an "operadic action" has also been used to describe the symmetries of physical systems in a more general.



Conflict of Interest

No conflict of interest.


  1. Saitô, Hazime, Isao Ando and Ayyalusamy Ramamoorthy. "Chemical shift tensor–the heart of NMR: Insights into biological aspects of proteins." Prog Nucl Magn Reson Spectrosc 57 (2010): 181.
  2. Google Scholar, Crossref, Indexed at

  3. Sharp, Kim A., Vignesh Kasinath and A. Joshua Wand. "Banding 2of NMR‐derived methyl order parameters: Implications for protein dynamics." Proteins Struct Funct 82 (2014): 2106-2117.
  4. Google Scholar, Crossref, Indexed at

  5. Sharp, Kim A., Evan O'Brien, Vignesh Kasinath and A. Joshua Wand, et al. "On the relationship between NMR‐derived amide order parameters and protein backbone entropy changes." Proteins Struct Funct 83 (2015): 922-930.
  6. Google Scholar, Crossref, Indexed at

  7. Sturtevant, Julian M. "Heat capacity and entropy changes in processes involving proteins." Proc Natl Acad Sci 74 (1977): 2236-2240.
  8. Google Scholar, Crossref, Indexed at

  9. Wand, A. Joshua. "The dark energy of proteins comes to light: conformational entropy and its role in protein function revealed by NMR relaxation." Curr Opin Struct Biol 23 (2013): 75-81. 
  10. Google Scholar, Crossref, Indexed at

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