TY - JOUR AU - Elliott H. Lieb TI - On the lowest eigenvalue of the Laplacian for the intersection of two domains. JO - Inventiones mathematicae PY - 1983 SP - 441 EP - 448 VL - 74 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1983__74_143081/ ID - IM_1983__74_143081 ER -