Simple closed curves in surfaces (Ex)

From Manifold Atlas
Jump to: navigation, search

Let \Sigma_g be a closed oriented surface of genus g and let \alpha_1, \dots, \alpha_g \subset \Sigma_g be pair-wise disjoint simple closed curves. Prove that the set of homology classes \{[\alpha_1], \dots [\alpha_g]\} \subset H_1(\Sigma_g; \Z/2) is linearly independent if the complement \Sigma_g \setminus \cup_{i=1}^g \alpha_i is connected.

Does the converse hold?

Personal tools
Namespaces
Variants
Actions
Navigation
Interaction
Toolbox