Lax pair - large sieve method - local cohomology - Lusztig - Lagrange-Duhamel method - Lax-Maslov operator - Lebesgue lemma - Lebesgue spine - Lefschetz class - Lefschetz decomposition - Lefschetz hyperplane theorem - Lefschetz pencil - Lelong number - Lelong theorem - Lepage decomposition - Leray-Hirsch theorem - Leray spectral sequence - Leray theorem - Levi extension theorem - Levi theorem - Levy inversion formula - Levy-Khinchin theorem - Lewy's example - Lichnerowicz lemma - Liouville field - Lie theorem - Lie transformation - Lie triple system - Line bundle associated to a divisor - Linked roots - Local duality theorem - Logmodular algebra - Lopatinski operator - Lüroth's theorem - Lusternik-Schnirelmann-Borsuk theorem - Lusternik-Schnirelmann category - Last multiplier - Lambert's projection - Lambert's trinomial equation - Lyapunov methods - Layer filtration - Leray-Hirsch theorem - Leray-Serre spectral sequence - Langlands decomposition - Large compact subgroup - Leading exponent - Leading term - Levi decomposition - Levi subalgebra - Levi subgroup - Lie's theorem - Liminaire - Lange's conjecture - Lovasz conjecture
Leminiscatic - Limit set - Linear projections - Local finiteness - Elisabeth Lutz -