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This is the first book to contain a rigorous construction and uniqueness proof for the largest and most famous sporadic simple group, the Monster. The author provides a systematic exposition of the theory of the Monster group, which remains largely unpublished despite great interest from both mathematicians and physicists due to its intrinsic connection with various areas in mathematics, including reflection groups, modular forms and conformal field theory. Through construction via the Monster amalgam - one of the most promising in the modern theory of finite groups - the author observes some important properties of the action of the Monster on its minimal module, which are axiomatized under the name of Majorana involutions. Development of the theory of the groups generated by Majorana involutions leads the author to the conjecture that Monster is the largest group generated by the Majorana involutions.

Involutes (Mathematics) --- Sporadic groups (Mathematics) --- Involutes (Mathematics). --- Sporadic groups (Mathematics). --- Curves --- Inversions (Geometry) --- Groups, Sporadic (Mathematics) --- Finite groups

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This monograph covers the existing results regarding Green’s functions for differential equations with involutions (DEI).The first part of the book is devoted to the study of the most useful aspects of involutions from an analytical point of view and the associated algebras of differential operators. The work combines the state of the art regarding the existence and uniqueness results for DEI and new theorems describing how to obtain Green’s functions, proving that the theory can be extended to operators (not necessarily involutions) of a similar nature, such as the Hilbert transform or projections, due to their analogous algebraic properties. Obtaining a Green’s function for these operators leads to new results on the qualitative properties of the solutions, in particular maximum and antimaximum principles.

Calculus --- Mathematics --- Physical Sciences & Mathematics --- Differential equations. --- Involutes (Mathematics) --- 517.91 Differential equations --- Differential equations --- Mathematics. --- Physics. --- Ordinary Differential Equations. --- Mathematical Methods in Physics. --- Curves --- Inversions (Geometry) --- Differential Equations. --- Mathematical physics. --- Physical mathematics --- Physics --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics