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Welcome to The Wikipedia Adventure!

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Hi Minecrafter0271! We're so happy you wanted to play to learn, as a friendly and fun way to get into our community and mission. I think these links might be helpful to you as you get started.

-- 22:49, Thursday, January 2, 2020 (UTC)

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Welcome to The Wikipedia Adventure!

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Hi Minecrafter0271! We're so happy you wanted to play to learn, as a friendly and fun way to get into our community and mission. I think these links might be helpful to you as you get started.

-- 23:01, Thursday, January 2, 2020 (UTC)

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Welcome to The Wikipedia Adventure!

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Hi Minecrafter0271! We're so happy you wanted to play to learn, as a friendly and fun way to get into our community and mission. I think these links might be helpful to you as you get started.

-- 23:14, Thursday, January 2, 2020 (UTC)

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Welcome to The Wikipedia Adventure!

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Hi Minecrafter0271! We're so happy you wanted to play to learn, as a friendly and fun way to get into our community and mission. I think these links might be helpful to you as you get started.

-- 01:08, Friday, January 24, 2020 (UTC)

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Welcome to The Wikipedia Adventure!

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-- 22:57, Friday, February 7, 2020 (UTC)

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Birkhoff's theorem (equational logic)

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In logic, Birkhoff's theorem states that an equality t = u is a semantic consequence of a set of equalities E, if and only if t = u can be proven from the set of equalities.^[1]

According to Birkhoff's theorem, formal languages are considered to be models of natural languages. In mathematical logic, a person creates several classes of formal languages, to which first order logic and equational logic are of the highest importance. ^[2]

Equational languages are formal languages made up of countable variables, function symbols and an equality symbol. ^[3]

Equational logic can be combined with first order logic. Much of equational logic is derived from first order logic. ^[4]

References

^ Baader, Franz; Nipkow, Tobias (March 1998). "Term Rewriting and All That". Cambridge Core. p. Th. 3.5.14, p. 55. Retrieved 2020-02-13.{{cite web}}: CS1 maint: url-status (link)
^ Equational logic. Jan Mycielski (originator), Encyclopedia of Mathematics. URL: https://www.encyclopediaofmath.org/index.php?title=Equational_logic&oldid=13940
^ Equational logic. Jan Mycielski (originator), Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Equational_logic&oldid=13940
^ Sakharov, Alex. "Equational Logic." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. http://mathworld.wolfram.com/EquationalLogic.html