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2. simple.wikipedia.org › wiki › Abelian_groupAbelian group - Simple English Wikipedia, the free encyclopedia

   simple.wikipedia.org › wiki › Abelian_group

   • 庫存頁面

   An abelian group is a set, A, together with an operation "•". It combines any two elements a and b to form another element denoted a • b. For the group to be abelian, the operation and the elements (A, •) must follow some requirements. These are known as the abelian group axioms : Closure.

3. simple.wikipedia.org › wiki › Main_PageWikipedia

   simple.wikipedia.org › wiki › Main_Page

   • 庫存頁面

   Wikipedias are places where people work together to write encyclopedias in different languages. We use Simple English words and grammar here. The Simple English Wikipedia is for everyone, such as children and adults who are learning English. There are 251,457 articles on the Simple English Wikipedia. All of the pages are free to use.

4. simple.wikipedia.org › wiki › Group_(mathematics)Group (mathematics) - Simple English Wikipedia, the free ...

   simple.wikipedia.org › wiki › Group_(mathematics)

   • 庫存頁面

   • Integers, Addition, Zero
   • Symmetries
   • Other Groups

   One everyday example of a group is the set of integerswith the addition operation. It is easy to see that when adding two integers, the result is always an integer. So, closure is true. The identity element for this group is zero. Because the order of additions does not matter (in other words, a + ( b + c ) = ( a + b ) + c {\displaystyle a+(b+c)=(a...

   在「simple.wikipedia.org」查看更多資訊

   Another important kind of groups are groups of symmetries. Symmetry groups provide many examples of groups. It can be proved that every group of finite order is a group of symmetries. For this reason, group theory is called the mathematical study of symmetry. Objects are symmetric if keep some interesting features when changed. Those changes of obj...

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   Many things in mathematics are groups. This is mostly because groups help to benefit from a brilliant idea of ‘a change that keeps interesting feature unchanged", which are called symmetries. For example, equations. The ways of solving equations can be a group. Physical things can be studied as groups. There are important symmetries about physical ...

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5. simple.wikipedia.org › wiki › WikipediaWikipedia - Simple English Wikipedia, the free encyclopedia

   simple.wikipedia.org › wiki › Wikipedia

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   Wikipedia ( pronunciation (help·info)) is a free online encyclopedia website in 336 languages of the world. 324 languages are currently active and 13 are closed. People can freely use it, share it, and change it, without having to pay. It is also one of the biggest wiki organizations.

6. simple.wikipedia.org › wiki › List_of_mathematical_symbolsList of mathematical symbols - Simple English Wikipedia, the ...

   simple.wikipedia.org › wiki › List_of_mathematical_symbols

   • 庫存頁面

   List of mathematical symbols. The list below has some of the most common symbols in mathematics. However, these symbols can have other meanings in different contexts other than math. Related page. Mathematical constant. Other websites. Mathematical Symbols — Math Vault. Math Symbols List — Categories: Mathematics lists. Symbols.

7. simple.wikipedia.org › wiki › BDSMBDSM - Simple English Wikipedia, the free encyclopedia

   simple.wikipedia.org › wiki › BDSM

   • 庫存頁面

   BDSM is an initialism for bondage/discipline ( BD) and sadism / masochism ( SM ). It means some kinds of sex play, sometimes these are called kink or fetish. They all have to do with trying to get sexual pleasure out of things that are often painful or upsetting. People try to do this in a safe way by agreeing on a "safe word".

8. simple.wikipedia.org › wiki › Periodic_tablePeriodic table - Simple English Wikipedia, the free encyclopedia

   simple.wikipedia.org › wiki › Periodic_table

   • 庫存頁面

   The periodic table is a table that puts all known chemical elements in a specific order. Elements that have similar characteristics are often put near each other. In the table, the elements are placed in the order of their atomic numbers starting with the lowest number of one, hydrogen.