++ -- a binary operator, usually used for direct sum

Ways to use symbol ++ :

• BettiTally ++ BettiTally -- see BettiTally -- the class of all Betti tallies
• ChainComplex ++ ChainComplex -- direct sum
• ChainComplexMap ++ ChainComplexMap -- see ChainComplex ++ ChainComplex -- direct sum
• GradedModule ++ GradedModule -- see ChainComplex ++ ChainComplex -- direct sum
• CoherentSheaf ++ CoherentSheaf -- direct sum of coherent sheaves
• Option ++ Option -- see directSum -- direct sum of modules or maps
• DirectSum ++ DirectSum (missing documentation)
• DirectSum ++ Expression (missing documentation)
• DirectSum ++ Holder (missing documentation)
• DirectSum ++ ZeroExpression (missing documentation)
• Expression ++ DirectSum (missing documentation)
• Expression ++ Expression (missing documentation)
• Expression ++ Thing (missing documentation)
• Expression ++ ZeroExpression (missing documentation)
• Holder ++ DirectSum (missing documentation)
• GradedModuleMap ++ GradedModuleMap -- see Matrix ++ Matrix -- direct sum of maps
• Matrix ++ Matrix -- direct sum of maps
• Matrix ++ RingElement -- see Matrix ++ Matrix -- direct sum of maps
• RingElement ++ Matrix -- see Matrix ++ Matrix -- direct sum of maps
• RingElement ++ RingElement -- see Matrix ++ Matrix -- direct sum of maps
• GradedModule ++ Module -- see Module ++ Module -- direct sum of modules
• Module ++ GradedModule -- see Module ++ Module -- direct sum of modules
• Module ++ Module -- direct sum of modules
• OptionTable ++ List -- see OptionTable ++ OptionTable -- a binary operator, usually used for direct sum
• OptionTable ++ OptionTable -- a binary operator, usually used for direct sum
• SheafMap ++ SheafMap (missing documentation)
• Thing ++ Expression (missing documentation)
• ZeroExpression ++ DirectSum (missing documentation)
• ZeroExpression ++ Expression (missing documentation)

For the programmer

The object ++ is a keyword.

         X ++ Y := (x,y) -> ...