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end of proof symbol
created by
SPUI
(
idea
) by
SPUI
(8.8 mon)
(
print
)
?
(
I like it!
)
Thu Jul 06 2000 at 0:18:11
A
symbol
that ends a
proof
, usually
mathematical
.
QED
and
w^5
are the most common
EOP
symbols. Many people make up their own; mine is an
Interstate 99
shield with a
circle with a line thru it
around it, representing my dislike of
Interstate 99
. On
E2
I must approximate it
(9/9)
. Others I have seen are a
triangular
gastropod
and
1=2
; the
latter
is not recommended on a
test
though.
(
thing
) by
Singing Raven
(1.3 y)
(
print
)
?
(
I like it!
)
Tue Jun 14 2005 at 17:46:02
Another, more standard, symbol to end a proof would be the
contradiction
symbol. Used in proofs of method
reductio ad absurdum
('proof by contradiction'), the Contradiction symbol indicates that an obvious contradiction has been reached and so (generally) the proof is ended. The symbol resembles the Scottish flag with four bullet-holes through it, and is not available in standard
LaTeX
fonts. (Brackets added for clarity) The symbol can be described as ((two parallel lines) intersected by (two parallel lines)) with ((four filled circles) at the (centrepoint of the square which the approximate endpoints of the four lines will form)).
printable version
chaos
w^5
1=2
Gastropod
QED
Interstate 99
What do theorems look like?
One equals point nine repeating
WWWWW
3816547290
triangular
Halmos symbol
A line allows progress, a circle does not
discrete mathematics
Jacob's Ladder
The Hedgehog Can Never Be Buggered At All
Q.E.D.
HTML symbol reference
latex
reductio ad absurdum
Nathanael West
party store
Lightning Bolt
convex combination
Therefore
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