The theory of motifs: unified cohomology

Contemporary research in mathematics is engaged in unveiling the deepest foundations that unite arithmetic, geometry, and topology. At the heart of this quest, motif theory stands out as an ambitious answer, aiming to decipher a universal language behind the diversity of cohomological invariants arising from algebraic varieties. This perspective, sketched by Grothendieck in the mid-1960s, … Read more

The theory of sheaves: cohomology and geometry

A fundamental tool in modern mathematics, sheaf theory revolutionizes the way we understand spaces and their local and global properties. It closely connects topology, algebraic geometry, and homological algebra, offering a unifying language to explore complex objects where the interaction between local and global structures is crucial. The cohomology of sheaves, in particular, paves the … Read more

Algebraic topology: homotopy and cohomology

Algebraic topology, a flagship discipline of mathematics, focuses on studying the properties of topological spaces through the lens of algebraic tools. Among its fundamental concepts, homotopy and cohomology play a central role by providing powerful invariants to classify and understand the deep structure of spaces. From loops on a circle to more complex spaces, these … Read more