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The non-orientable genus, demigenus, or Euler genus of a connected, non-orientable closed surface is a positive integer representing the number of cross-caps attached to a sphere. Alternatively, it can be defined for a closed surface in terms of the Euler characteristic χ, via the relationship χ = 2 − k , where k is the non-orientable genus.
The genus (sometimes called the demigenus or Euler genus) of a connected non-orientable closed surface is a positive integer representing the number of cross-caps attached to a sphere. Alternatively, it can be defined for a closed surface in terms of the Euler characteristic χ, via the relationship χ = 2 − g, where g is the non-orientable ...
Many of these items named after Euler include their own unique function, equation, formula, identity, number (single or sequence), or other mathematical entity. Many of these entities have been given simple yet ambiguous names such as Euler's function, Euler's equation, and Euler's formula.
Born right smack on the cusp of millennial and Gen Z years (ahem, 1996), I grew up both enjoying the wonders of a digital-free world—collecting snail shells in my pocket and scraping knees on my ...
The 18th-century Swiss mathematician Leonhard Euler (1707–1783) is among the most prolific and successful mathematicians in the history of the field. His seminal work had a profound impact in numerous areas of mathematics and he is widely credited for introducing and popularizing modern notation and terminology.
Chambers Slang Dictionary (by Jonathon Green, Chambers Harrap Publishers, ISBN 978-0-550-10439-7), 2008 previously Cassell Dictionary of Slang (Cassell Reference, 1998; last edition 2006, ISBN 978-0-304-36636-1) Dictionary of Slang and Unconventional English (by Eric Partridge and Paul Beale, Routledge, 2002, ISBN 0-415-29189-5)
Slang used or popularized by Generation Z (Gen Z; generally those born between the late 1990s and early 2010s in the Western world) differs from slang of earlier generations; [1] [2] ease of communication via Internet social media has facilitated its rapid proliferation, creating "an unprecedented variety of linguistic variation". [2] [3] [4]
In honor of Black Twitter's contribution, Stacker compiled a list of 20 slang words it brought to popularity, using the AAVE Glossary, Urban Dictionary, Know Your Meme, and other internet ...