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Showing 1 to 4 of 4 for “"Epimorphism"”.
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Geometric and homological methods in group theory: constructing small group resolutions
… the free group A1 and the corresponding unique epimorphism from the free group on those generators to the semidirect product. This gives us the I-dimensional free crossed resolution A1 --> G1 (see Proposition 4.1). Next we define a set of generators Z2 that together with Z1, constitute a …
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Matrix Factorizations With More Than Two Factors
<p>Let $S$ be a regular local ring and $f$ a non-zero non-invertible element of $S$. In this thesis, we study the notion of a matrix factorization of $f$ with $d\ge 2$ factors, that is, we consider tuples of square matrices $(\phi_1,\phi_2,\dots,\phi_d)$, with entries in $S$, such that their …