L-values and ExtensionsExplores de Rham theory, L-values, and extensions, including special value formulas and examples related to Hecke characters and modular forms.
Cohomology: Cross ProductExplores cohomology and the cross product, demonstrating its application in group actions like conjugation.
Classification of ExtensionsExplores the classification of extensions in group theory, emphasizing split extensions and semi-direct products.
