# residue case

**residue case**- A case for distributing mail destined for post offices that do not have separations on primary or secondary distribution cases.

*Glossary of postal terms.
2014.*

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**residue**— Mail for small post offices that have no direct separation space in a case or rack … Glossary of postal terms**Residue (complex analysis)**— In mathematics, more specifically complex analysis, the residue is a complex number proportional to the contour integral of a meromorphic function along a path enclosing one of its singularities. (More generally, residues can be calculated for… … Wikipedia**Quadratic residue**— In number theory, an integer q is called a quadratic residue modulo n if it is congruent to a perfect square modulo n; i.e., if there exists an integer x such that: Otherwise, q is called a quadratic nonresidue modulo n. Originally an abstract… … Wikipedia**Poincaré residue**— In mathematics, the Poincaré residue is a generalization, to several complex variables and complex manifold theory, of the residue at a pole of complex function theory. It is just one of a number of such possible extensions.The theory assumes… … Wikipedia**Noncommutative residue**— In mathematics, noncommutative residue, defined independently by M. Wodzicki (1984) and Guillemin (1985), is a certain trace on the algebra of pseudodifferential operators on a compact differentiable manifold that is expressed via a local density … Wikipedia**Trans-en-Provence Case**— The Trans en Provence Case is one of the rare cases where a UFO is said to have left physical evidence, in the form of burnt residue from a field. The event took place on January 8 1981, outside the town of Trans en Provence in the French… … Wikipedia**Modular arithmetic**— In mathematics, modular arithmetic (sometimes called clock arithmetic) is a system of arithmetic for integers, where numbers wrap around after they reach a certain value the modulus. The Swiss mathematician Leonhard Euler pioneered the modern… … Wikipedia**Splitting of prime ideals in Galois extensions**— In mathematics, the interplay between the Galois group G of a Galois extension L of a number field K, and the way the prime ideals P of the ring of integers OK factorise as products of prime ideals of OL, provides one of the richest parts of… … Wikipedia**Azeotrope**— Vapor liquid equilibrium of 2 propanol/water showing azeotropic behavior An azeotrope ( / … Wikipedia**Cubic reciprocity**— is a collection of theorems in elementary and algebraic number theory that state conditions under which the congruence x3 ≡ p (mod q) is solvable; the word reciprocity comes from the form of the main theorem, which states that … Wikipedia