nLab
cobase change
limits and colimits
1-Categorical
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limit and colimit
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limits and colimits by example
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commutativity of limits and colimits
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small limit
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filtered colimit
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sifted colimit
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connected limit, wide pullback
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preserved limit, reflected limit, created limit
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product, fiber product, base change, coproduct, pullback, pushout, cobase change, equalizer, coequalizer, join, meet, terminal object, initial object, direct product, direct sum
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finite limit
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Kan extension
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weighted limit
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end and coend
2-Categorical
(∞,1)-Categorical
Model-categorical
Contents
Definition
Cobase change is another term for pushout of a morphism:
if
\array{
X &\to & U
\\
\downarrow && \downarrow
\\
Y &\to& Y \sqcup_X U
}
is a pushout square in some category then the morphism is the cobase change or cobase extension of along .
Revised on May 19, 2010 09:09:08
by
Urs Schreiber
(131.211.232.167)