quadratic lattice — tetragoninė gardelė statusas T sritis chemija apibrėžtis Elementarioji gardelė, kurios visi kampai statūs, o pagrindo kraštinės lygios. atitikmenys: angl. quadratic lattice; tetragonal lattice rus. ромбоэдрическая решетка; тетрагональная решетка … Chemijos terminų aiškinamasis žodynas
Quadratic form — In mathematics, a quadratic form is a homogeneous polynomial of degree two in a number of variables. For example, is a quadratic form in the variables x and y. Quadratic forms occupy a central place in various branches of mathematics, including… … Wikipedia
Quadratic field — In algebraic number theory, a quadratic field is an algebraic number field K of degree two over Q. It is easy to show that the map d ↦ Q(√d) is a bijection from the set of all square free integers d ≠ 0, 1 to the set of… … Wikipedia
tetragonal lattice — tetragoninė gardelė statusas T sritis chemija apibrėžtis Elementarioji gardelė, kurios visi kampai statūs, o pagrindo kraštinės lygios. atitikmenys: angl. quadratic lattice; tetragonal lattice rus. ромбоэдрическая решетка; тетрагональная решетка … Chemijos terminų aiškinamasis žodynas
tetragonal lattice — tetragoninė gardelė statusas T sritis fizika atitikmenys: angl. quadratic lattice; tetragonal lattice vok. quadratisches Gitter, n; tetragonales Gitter, n rus. квадратичная решётка, f; тетрагональная решётка, f pranc. réseau quadratique, m;… … Fizikos terminų žodynas
E₈ lattice — In mathematics, the E8 lattice is a special lattice in R8. It can be characterized as the unique positive definite, even, unimodular lattice of rank 8. The name derives from the fact that it is the root lattice of the E8 root system. The normIn… … Wikipedia
Proofs of quadratic reciprocity — In the mathematical field of number theory, the law of quadratic reciprocity, like the Pythagorean theorem, has lent itself to an unusual number of proofs. Several hundred proofs of the law of quadratic reciprocity have been found.Proofs that are … Wikipedia
Leech lattice — In mathematics, the Leech lattice is an even unimodular lattice Λ24 in 24 dimensional Euclidean space E24 found by John Leech (1967). Contents 1 History 2 Characterization 3 Properties … Wikipedia
Niemeier lattice — In mathematics, a Niemeier lattice is one of the 24 positive definite even unimodular lattices of rank 24, which were classified by Hans Volker Niemeier (1973). Venkov (1978) gave a simplified proof of the classification. Witt (1941) has a… … Wikipedia
Lenstra–Lenstra–Lovász lattice basis reduction algorithm — The Lenstra–Lenstra–Lovász lattice basis reduction (LLL) is a polynomial time lattice reduction algorithm invented by Arjen Lenstra, Hendrik Lenstra and László Lovász. Given as input d lattice basis vectors with n dimensional integer coordinates… … Wikipedia
