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  2. List of mathematical abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical...

    This following list features abbreviated names of mathematical functions, function-like operators and other mathematical terminology. This list is limited to abbreviations of two or more letters (excluding number sets).

  3. Friendly number - Wikipedia

    en.wikipedia.org/wiki/Friendly_number

    In number theory, friendly numbers are two or more natural numbers with a common abundancy index, the ratio between the sum of divisors of a number and the number itself. Two numbers with the same "abundancy" form a friendly pair; n numbers with the same abundancy form a friendly n-tuple.

  4. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Examples of unexpected applications of mathematical theories can be found in many areas of mathematics. A notable example is the prime factorization of natural numbers that was discovered more than 2,000 years before its common use for secure internet communications through the RSA cryptosystem . [ 127 ]

  5. Theorem on friends and strangers - Wikipedia

    en.wikipedia.org/wiki/Theorem_on_friends_and...

    78 of the 156 possible friends-strangers graphs with 6 nodes. The other 78 can be obtained by reversing the red and blue colours of each graph. For each graph the red/blue nodes shows a sample triplet of mutual friends/strangers. The theorem on friends and strangers is a mathematical theorem in an area of mathematics called Ramsey theory.

  6. How teachers are using Taylor Swift's music to make 'learning ...

    www.aol.com/entertainment/teachers-using-taylor...

    He posted a video to TikTok of his kids singing along with math-themed lyrics. "[The video] blew up to a million views in 24 hours," he says. ... Kid" song lyric by creating a friendship bracelet ...

  7. Friendship - Wikipedia

    en.wikipedia.org/wiki/Friendship

    The friends help each other in practical ways. [37] For example, a friend might drive another friend to the airport. Similarity The friends have similar worldviews. [37] For example, they might have the same culture, class, religion, or life experiences. Enjoyment The friends believe that it is fun and easy to spend time together. [37] Agency

  8. 10 fascinating facts you might not know about 'Friends' - AOL

    www.aol.com/entertainment/2016-06-01-10...

    While many people declare themselves a super-fan, only true, true fans would know the following 10 fun facts about the Central perk gang. 10.) The series went through a variety of name changes ...

  9. The One Where ‘Friends’ Turns 30 Years Old: 30 Facts from ...

    www.aol.com/entertainment/one-where-friends...

    Monica’s name is featured in only eight episode titles, the fewest of the six friends. Rachel’s name was featured the most, with 27. Chandler is the only friend who does not have a sibling.