In
algebraic topology
Algebraic topology is a branch of mathematics that uses tools from abstract algebra to study topological spaces. The basic goal is to find algebraic invariants that classify topological spaces up to homeomorphism, though usually most classif ...
, the mapping spectrum
of
spectra
Spectra may refer to:
* The plural of spectrum, conditions or values that vary over a continuum, especially the colours of visible light
* ''Spectra'' (journal), of the Museum Computer Network (MCN)
* The plural of spectrum (topology), an object ...
''X'', ''Y'' is characterized by
:
References
{{topology-stub
Algebraic topology