| |
| |
| |
Recollections and Perspectives | |
| |
| |
| |
Factorization | |
| |
| |
| |
Factorization domains | |
| |
| |
| |
Polynomial and power series rings | |
| |
| |
| |
Linear algebra | |
| |
| |
| |
Free modules | |
| |
| |
| |
Projective modules | |
| |
| |
| |
Projective resolutions | |
| |
| |
| |
Multilinear algebra | |
| |
| |
| |
R[X[subscript 1],..., X[subscript t]] as a symmetric algebra | |
| |
| |
| |
The divided power algebra | |
| |
| |
| |
The exterior algebra | |
| |
| |
| |
Local Ring Theory | |
| |
| |
| |
Koszul complexes | |
| |
| |
| |
Local rings | |
| |
| |
| |
Hilbert-Samuel polynomials | |
| |
| |
| |
Codimension and finitistic global dimension | |
| |
| |
| |
Regular local rings | |
| |
| |
| |
Unique factorization | |
| |
| |
| |
Multiplicity | |
| |
| |
| |
Intersection multiplicity and the homological conjectures | |
| |
| |
| |
Generalized Koszul Complexes | |
| |
| |
| |
A few standard complexes | |
| |
| |
| |
The graded Koszul complex and its "derivatives" | |
| |
| |
| |
Definitions of the hooks and their explicit bases | |
| |
| |
| |
General setup | |
| |
| |
| |
The fat complexes | |
| |
| |
| |
Slimming down | |
| |
| |
| |
Families of complexes | |
| |
| |
| |
The "homothety homotopy" | |
| |
| |
| |
Comparison of the fat and slim complexes | |
| |
| |
| |
Depth-sensitivity of T(q; f) | |
| |
| |
| |
Another kind of multiplicity | |
| |
| |
| |
Structure Theorems for Finite Free Resolutions | |
| |
| |
| |
Some criteria for exactness | |
| |
| |
| |
The first structure theorem | |
| |
| |
| |
Proof of the first structure theorem | |
| |
| |
| |
Part (a) | |
| |
| |
| |
Part (b) | |
| |
| |
| |
The second structure theorem | |
| |
| |
| |
Exactness Criteria at Work | |
| |
| |
| |
Pfaffian ideals | |
| |
| |
| |
Pfaffians | |
| |
| |
| |
Resolution of a certain pfaffian ideal | |
| |
| |
| |
Algebra structures on resolutions | |
| |
| |
| |
Proof of Part 2 of Theorem V.1.8 | |
| |
| |
| |
Powers of pfaffian ideals | |
| |
| |
| |
Intrinsic description of the matrix X | |
| |
| |
| |
Hooks again | |
| |
| |
| |
Some representation theory | |
| |
| |
| |
A counting argument | |
| |
| |
| |
Description of the resolutions | |
| |
| |
| |
Proof of Theorem V.2.4 | |
| |
| |
| |
Weyl and Schur Modules | |
| |
| |
| |
Shape matrices and tableaux | |
| |
| |
| |
Shape matrices | |
| |
| |
| |
Tableaux | |
| |
| |
| |
Weyl and Schur modules associated to shape matrices | |
| |
| |
| |
Letter-place algebra | |
| |
| |
| |
Positive places and the divided power algebra | |
| |
| |
| |
Negative places and the exterior algebra | |
| |
| |
| |
The symmetric algebra (or negative letters and places) | |
| |
| |
| |
Putting it all together | |
| |
| |
| |
Place polarization maps and Capelli identities | |
| |
| |
| |
Weyl and Schur maps revisited | |
| |
| |
| |
Some kernel elements of Weyl and Schur maps | |
| |
| |
| |
Tableaux, straightening, and the straight basis theorem | |
| |
| |
| |
Tableaux for Weyl and Schur modules | |
| |
| |
| |
Straightening tableaux | |
| |
| |
| |
Taylor-made tableaux, or a straight-filling algorithm | |
| |
| |
| |
Proof of linear independence of straight tableaux | |
| |
| |
| |
Modifications for Schur modules | |
| |
| |
| |
Duality | |
| |
| |
| |
Weyl-Schur complexes | |
| |
| |
| |
Some Applications of Weyl and Schur Modules | |
| |
| |
| |
The fundamental exact sequence | |
| |
| |
| |
Direct sums and filtrations for skew-shapes | |
| |
| |
| |
Resolution of determinantal ideals | |
| |
| |
| |
The Lascoux resolutions | |
| |
| |
| |
The submaximal minors | |
| |
| |
| |
Z-forms | |
| |
| |
| |
Arithmetic considerations | |
| |
| |
| |
Intertwining numbers | |
| |
| |
| |
Z-forms again | |
| |
| |
| |
Resolutions revisited; the Hashimoto counterexample | |
| |
| |
| |
Resolutions of Weyl modules | |
| |
| |
| |
The bar complex | |
| |
| |
| |
The two-rowed case | |
| |
| |
| |
A three-rowed example | |
| |
| |
| |
Resolutions of skew-hooks | |
| |
| |
| |
Comparison with the Lascoux resolutions | |
| |
| |
| |
Appendix for Letter-Place Methods | |
| |
| |
| |
Theorem VI.3.2, Part 1: the double standard tableaux generate | |
| |
| |
| |
Theorem VI.3.2 Part 2: linear independence of double standard tableaux | |
| |
| |
| |
Modifications required for Theorems VI.3.3 and VI.3.4 | |
| |
| |
| |
Modifications required for Theorem VI.8.4 | |
| |
| |
References | |
| |
| |
Index | |