The Index of Stickelberger Ideals of Order2 and Cuspidal Class Numbers .
The integral homology of SL2 and PSL2 of euclidean imaginary quadratic integers.
The intersection theorem for orderings of higher level in rings.
The lattice of integral flows and the lattice of integral cuts on a finite graph
The least common denominator of the coefficients of a perfect quadratic form
The Lefschetz number of an involution on the space of classes of positive definite quadratic forms.
The Lehmus inequality.
The level of real projective spaces.
The L-Theory of Laurent extensions and genus 0 function fields.
The Markoff spectrum
The mininima of positive definite Heranmitian binary quadratic forms
The module of a 2-component link.
The Moduli Space of (3,3,3) Trilinear forms.
The Noether-Lefschetz theorem and sums of 4 squares in the rational function field
The Nullstellensatz for real coherent analytic surfaces.
The number of representations by sums of squares and triangular numbers.
The Pythagoras number of some affine algebras and local algebras.
The quadratic form transfer and valuations.
The reduced Wittring
The representation of one quadratic form by another in valuated fields