History of tag 04W0
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changed the proof
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2011-11-01 |
af2dd06 |
fixed typo
Fixed a typo in lemma about cardinality in ring epimorphisms (tag=04W0)
: replaced g by g' to obtain :
"... and write $(P, U, V) = (X', Y'X', X'Z')$ for a matrix factorization
$(g') = Y'X'Z'$ of $g'$".
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assigned tag 04W0
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2010-07-08 |
3fff113
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Added new tags
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created statement with label lemma-epimorphism-cardinality in algebra.tex
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2010-07-06 |
83e7f8e |
Epimorphisms of rings
If R ---> S is an epimorphism of rings then |S| <= |R|.
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