Stochastic Independence, Algebraic Independence and Connectedness

ثبت نشده
چکیده

Mutual stochastic independences among-algebras and mutual algebraic inde-pendences among elements of semimodular lattices are observed to have a very similar behaviour. We suggest abstract independence structures called I-relations describing it. Presented examination of I-relations resembles a theory of abstract connectedness: a dual characterization of I-relations by families of connected sets is found by means of a special Galois connection. Representations of I-relations in the matroid theory sense by-algebras and by elements of lattices are discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

ALGEBRAIC INDEPENDENCE OF CERTAIN FORMAL POWER SERIES (I)

We give a proof of the generalisation of Mendes-France and Van der Poorten's recent result over an arbitrary field of positive characteristic and then by extending a result of Carlitz, we shall introduce a class of algebraically independent series.

متن کامل

Conditional Independences among Four Random Variables Ii

Numerous new properties of stochastic conditional independence are introduced. They are aimed, together with two surprisingly trivial examples, at a further reduction of the problem of probabilistic representability for four{element sets, i.e. of the problem which conditional independences within a system of four random variables can occur simultaneously. Proofs are based on fundamental propert...

متن کامل

Three Lectures on Free Probability Jonathan Novak with Illustrations by Michael Lacroix

0. Introduction 2 1. Lecture One: Discovering the Free World 2 1.1. Counting connected graphs 2 1.2. Cumulants and connectedness 4 1.3. Cumulants and independence 7 1.4. Central Limit Theorem by cumulants 9 1.5. Geometrically connected graphs 10 1.6. Non-crossing cumulants 12 1.7. Non-crossing independence 19 1.8. The medium is the message 21 1.9. A brief history of the free world 22 2. Lecture...

متن کامل

INDEPENDENT SETS OF SOME GRAPHS ASSOCIATED TO COMMUTATIVE RINGS

Let $G=(V,E)$ be a simple graph. A set $Ssubseteq V$ isindependent set of $G$,  if no two vertices of $S$ are adjacent.The  independence number $alpha(G)$ is the size of a maximumindependent set in the graph. In this paper we study and characterize the independent sets ofthe zero-divisor graph $Gamma(R)$ and ideal-based zero-divisor graph $Gamma_I(R)$of a commutative ring $R$.

متن کامل

Research Statement Algebraic Matroids: Structure and Applications

Matroids were introduced in the early 20th century as a way of uniting disparate notions of “independence” from across mathematics. Among these notions were linear independence of vectors and graphic independence – defined by acyclicity on the subgraph corresponding to a set of edges. Algebraic independence over a field k, defined by the non-existence of polynomial relations with coefficients i...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1994