This is a list of PPAD-complete problems.
Fixed-point theorems
Sperner's lemma Brouwer fixed-point theorem Kakutani fixed-point theorem
Game theory Nash equilibrium Core of Balanced Games
Equilibria in game theory and economics
Fisher market equilibria Arrow-Debreu equilibria Approximate Competitive Equilibrium from Equal Incomes Finding clearing payments in financial networks
Graph theory Fractional stable paths problems Fractional hypergraph matching (see also the NP-complete Hypergraph matching) Fractional strong kernel
Miscellaneous Scarf's lemma Fractional bounded budget connection games
References
Paper available online at Papadimitriou's Homepage.