moduli
81Isospectral — In mathematics, two linear operators are called isospectral or cospectral if they have the same spectrum. Roughly speaking, they are supposed to have the same sets of eigenvalues, when those are counted with multiplicity. The theory of… …
82Formal group — In mathematics, a formal group law is (roughly speaking) a formal power series behaving as if it were the product of a Lie group. They were first defined in 1946 by S. Bochner. The term formal group sometimes means the same as formal group law,… …
83Gravitino — The gravitino is the supersymmetric partner of the graviton, as predicted by theories combining general relativity and supersymmetry; i.e. supergravity theories. If it exists it is a fermion of spin 3/2 and therefore obeys the Rarita Schwinger… …
84Conifold — In mathematics and string theory, a conifold is a generalization of a manifold. Unlike manifolds, conifolds can contain conical singularities i.e. points whose neighbourhoods look like cones over a certain base. In physics, in particular in flux… …
85K3 surface — In mathematics, in the field of complex manifolds, a K3 surface is an important and interesting example of a compact complex surface (complex dimension 2 being real dimension 4). Together with two dimensional complex tori, they are the Calabi Yau …
86Kunihiko Kodaira — Infobox Scientist name =Kunihiko Kodaira box width = image width = caption = birth date =Birth date|1915|03|16 birth place =Tokyo, Japan death date =Death date and age|1997|07|26|1915|03|16 death place =Kōfu, Japan residence = citizenship =JPN… …
87Mapping class group — In mathematics, in the sub field of geometric topology, the mapping class group is an important algebraic invariant of a topological space. Briefly, the mapping class group is a discrete group of symmetries of the space. Contents 1 Motivation 2… …
88Plane curve — In mathematics, a plane curve is a curve in a Euclidean plane (cf. space curve). The most frequently studied cases are smooth plane curves (including piecewise smooth plane curves), and algebraic plane curves. A smooth plane curve is a curve in a …
89Blum integer — In mathematics, more specifically in number theory, a natural number n is a Blum integer if n = pq is a semiprime for which p and q are distinct prime numbers congruent to 3 mod 4. That is, p and q must be of the form 4 t +3, for some integer t …
90Torelli theorem — In mathematics, the Torelli theorem is a classical result of algebraic geometry over the complex number field, stating that a non singular algebraic curve (compact Riemann surface) C is determined by its Jacobian variety J ( C ), when the latter… …
