منابع مشابه
Algebraic Stein Varieties
It is well-known that the associated analytic space of an affine variety defined over complex number field is Stein but the converse is not true, that is, an algebraic Stein variety is not necessarily affine. In this talk, we will give sufficient and necessary conditions for an algebraic Stein variety to be affine. One of our results is that a quasi-projective variety Y defined over complex num...
متن کاملSylow Theory for Quasigroups Ii: Sectional Action
The first paper in this series initiated a study of Sylow theory for quasigroups and Latin squares, based on orbits of the left multiplication group. The current paper is based on socalled pseudo-orbits, which are formed by the images of a subset under the set of left translations. The two approaches agree for groups, but differ in the general case. Subsets are described as sectional if the pse...
متن کاملAspects of predicative algebraic set theory, II: Realizability
This paper is the second in a series on the relation between algebraic set theory [19] and predicative formal systems. The purpose of the present paper is to show how realizability models of constructive set theories fit into the framework of algebraic set theory. It can be read independently from the first part [5]; however, we recommend that readers of this paper read the introduction to [5],...
متن کاملOn reducibility of n-ary quasigroups, II
An n-ary operation Q : Σ → Σ is called an n-ary quasigroup of order |Σ| if in the equation x0 = Q(x1, . . . , xn) knowledge of any n elements of x0, . . . , xn uniquely specifies the remaining one. Q is permutably reducible ifQ(x1, . . . , xn) = P ` R(xσ(1), . . . , xσ(k)), xσ(k+1), . . . , xσ(n) ́ where P and R are (n − k + 1)-ary and k-ary quasigroups, σ is a permutation, and 1 < k < n. An m-a...
متن کاملA Note on Algebraic Properties of Quasigroups in Edon80
Stream cipher Edon80 [6] is one of the submissions to the ECRYPT Stream Cipher Project eSTREAM that passed to the Phase II of this project. The core of this cipher is based on pipelined quasigroup transformations using the so called e-transformers [6]. We study algebraic properties of the suggested quasigroups for use in the stream cipher Edon80 and prove that all the suggested quasigroups for ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Australian Mathematical Society
سال: 1979
ISSN: 0004-9727,1755-1633
DOI: 10.1017/s0004972700011059