$\mathbb P$-objects and autoequivalences of derived categories

$\mathbf{\bar{C}_{n,n-1}}$ revisited

${\bf C}^*$-extensions of tori, higher Chow groups and applications to incidence equivalence relations for algebraic cycles.

${\bf C}_+$-actions on contractible threefolds

${\cal H}$-cohomologies versus algebraic cycles

${\mathbb G}_a^M$ degeneration of flag varieties

${\rm K}_1(\mS_1)$ and the group of automorphisms of the algebra $\mS_2$ of one-sided inverses of a polynomial algebra in two variables

$β$-nbc bases for cohomology of local systems on hyperplane complements

$ε$-factors for Gauss-Manin determinants

$ε$-Factors for the Period Determinants of Curves

$Λ$-modules and holomorphic Lie algebroid connections

$π_1$-classification of real arrangements with up to eight lines

(1 + d/dz)^(-1)

(Bi-)Cohen-Macaulay simplicial complexes and their associated coherent sheaves

(Co)Simplicial Descent Categories

(Semi)simple exercises in quantum cohomology

*-Quantizations of Fourier-Mukai transforms

1-motivic sheaves and the Albanese functor

1-point Gromov-Witten invariants of the moduli spaces of sheaves over the projective plane

1-rational singularities and quotients by reductive groups