GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
############################################################################# ## ## CAP package ## ## Copyright 2015, Sebastian Gutsche, TU Kaiserslautern ## Sebastian Posur, RWTH Aachen ## #! @Chapter Serre Quotients Functors ## ############################################################################# #! The operations in this chapter construct conversion functors between two #! Serre quotients of different standards. #! Please note that all the operations DO NOT CARE if the Serre quotients #! are modeling the same category, they only care wether the categories are #! based upon the same underlying honest category. #################################### ## #! @Section Functors ## #################################### #! @Description #! Given two Serre quotients <A>A</A> and <A>B</A> of the same category <A>C</A> by equivalent functions, this operation #! returns the conversion functor between the two categories. Please note that this function does not check the #! quotients in any sense, i.e., wether the functions are equivalent. #! @Arguments A,B #! @Returns a functor DeclareOperation( "SerreQuotientConversionFunctor", [ IsCapCategory, IsCapCategory ] );