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According to Florian Cajori in A History of Mathematical Notations, Johann Rahn used both the therefore and because signs to mean "therefore"; in the German edition of Teutsche Algebra (1659) the therefore sign was prevalent with the modern meaning, but in the 1668 English edition Rahn used the because sign more often to mean "therefore".
may mean the same as (the symbol may also indicate the domain and codomain of a function ; see table of mathematical symbols ). ⊃ {\displaystyle \supset } may mean the same as ⇒ {\displaystyle \Rightarrow } (the symbol may also mean superset ).
Because sign: Therefore sign [ ] { } Brackets: Angle bracket, Parenthesis • Bullet: Interpunct ‸ ⁁ ⎀ Caret (proofreading) Caret (computing) (^) Chevron (non-Unicode name) Caret, Circumflex, Guillemet, Hacek, Glossary of mathematical symbols ^ Circumflex (symbol) Caret (The freestanding circumflex symbol is known as a caret in computing ...
For other symbols, such as the arrow, star, and heart, there isn’t a direct keyboard shortcut symbol. However, you can use a handy shortcut to get to the emoji library you’re used to seeing on ...
Therefore sign (U+2234 ∴ THEREFORE), a shorthand form of the word "therefore" or "thus" * In Japanese maps, the same symbol (∴) indicates an historic site. U+20DB ⃛ COMBINING THREE DOTS ABOVE character is a combining diacritical mark for symbols.
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Computers are shaping our minds in plentiful ways. By various reports, long stretches of screen time are making us less empathetic, more empathetic, less connected, more connected, less productive ...
The use of the therefore symbol to mean Q.E.D. is nonstandard. ... There is no therefore sign on my keyboard. I predict it becoming extinct within 20 years ...