Get it on Google Play
New! Download Unionpedia on your Androidâ„¢ device!
Faster access than browser!

E-dense semigroup

+ Save concept

In abstract algebra, an E-dense semigroup (also called an E-inversive semigroup) is a semigroup in which every element a has at least one weak inverse x, meaning that xax. [1]

11 relations: Abstract algebra, Dense set, E-semigroup, Idempotence, Krohn–Rhodes theory, Monogenic semigroup, Regular semigroup, Semigroup, Semigroup Forum, Special classes of semigroups, Weak inverse.

Abstract algebra

In algebra, which is a broad division of mathematics, abstract algebra (occasionally called modern algebra) is the study of algebraic structures.

New!!: E-dense semigroup and Abstract algebra · See more »


Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.

New!!: E-dense semigroup and Christmas · See more »

Christmas and holiday season

The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.

New!!: E-dense semigroup and Christmas and holiday season · See more »

Christmas Eve

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.

New!!: E-dense semigroup and Christmas Eve · See more »

Christmas traditions

Christmas traditions vary from country to country.

New!!: E-dense semigroup and Christmas traditions · See more »

Dense set

In topology and related areas of mathematics, a subset A of a topological space X is called dense (in X) if every point x in X either belongs to A or is a limit point of A, that is the closure of A is constituting the whole set X. Informally, for every point in X, the point is either in A or arbitrarily "close" to a member of A — for instance, every real number either is a rational number or has a rational number arbitrarily close to it (see Diophantine approximation).

New!!: E-dense semigroup and Dense set · See more »


In the area of mathematics known as semigroup theory, an E-semigroup is a semigroup in which the idempotents form a subsemigroup.

New!!: E-dense semigroup and E-semigroup · See more »


Idempotence is the property of certain operations in mathematics and computer science that they can be applied multiple times without changing the result beyond the initial application.

New!!: E-dense semigroup and Idempotence · See more »

Krohn–Rhodes theory

In mathematics and computer science, the Krohn–Rhodes theory (or algebraic automata theory) is an approach to the study of finite semigroups and automata that seeks to decompose them in terms of elementary components.

New!!: E-dense semigroup and Krohn–Rhodes theory · See more »

Monogenic semigroup

In mathematics, a monogenic semigroup is a semigroup generated by a single element.

New!!: E-dense semigroup and Monogenic semigroup · See more »

New Year

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.

New!!: E-dense semigroup and New Year · See more »

New Year's Day

New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.

New!!: E-dense semigroup and New Year's Day · See more »

New Year's Eve

In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.

New!!: E-dense semigroup and New Year's Eve · See more »

Regular semigroup

In mathematics, a regular semigroup is a semigroup S in which every element is regular, i.e., for each element a, there exists an element x such that axa.

New!!: E-dense semigroup and Regular semigroup · See more »


In mathematics, a semigroup is an algebraic structure consisting of a set together with an associative binary operation.

New!!: E-dense semigroup and Semigroup · See more »

Semigroup Forum

Semigroup Forum (print, electronic) is a mathematics research journal published by Springer.

New!!: E-dense semigroup and Semigroup Forum · See more »

Special classes of semigroups

In mathematics, a semigroup is a nonempty set together with an associative binary operation.

New!!: E-dense semigroup and Special classes of semigroups · See more »

Weak inverse

In mathematics, the term weak inverse is used with several meanings.

New!!: E-dense semigroup and Weak inverse · See more »


2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.

New!!: E-dense semigroup and 2018 · See more »


2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.

New!!: E-dense semigroup and 2019 · See more »

Redirects here:

0-inversive semigroup, E*-dense semigroup, E-inversive semigroup.


[1] https://en.wikipedia.org/wiki/E-dense_semigroup

Hey! We are on Facebook now! »