logical equivalence

Directory

References

Discover

Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009

Which Is Correct: Hanukkah or Chanukah?

Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro

Why Is Christmas in December?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

The Battle of Gettysburg, July 1-3, 1863. (Civil War, Pennsylvania)

9 Worst Generals in History

The Prado Museum facade at the Diego Velaszquez memorial. Established in 1819, the museum is considered the best collection of Spanish art and one of the world's finest collections of European art. Madrid, Spain

20 Paintings You Have to Visit at the Museo del Prado in Madrid

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics

10 Best Hockey Players of All Time

logical equivalence

logic

Learn about this topic in these articles:

logical semantics

In philosophy of logic: Logic and information
…utilized in semantical discussions than logical equivalence. Hence the transition from one sentence to another logically equivalent one is disregarded for the purposes of meaning concepts. This disregard would be justifiable if one of the most famous theses of Logical Positivists were true in a sufficiently strong sense, viz., that…
Read More

LPC quantifiers

In formal logic: Logical manipulations in LPC
The intuitive connections between some and every noted earlier are reflected in the fact that the following equivalences are valid: (∃x)ϕx ≡ ∼(∀x)∼ϕx
(∀x)ϕx ≡ ∼(∃ x)∼ϕx These equivalences remain valid when ϕx is replaced by any wff, however
Read More