There is big deal. x and y are commonly used as variables, p and q are used a statements in logic.
It is ~p.
The truth values.
Your Mom :P
P. A. Barker has written: 'The origins of Worcester'
there are 32 types of thesis statements possible
Evaluative Statements are ATTITUDES (Robbins & Judge; Essentials of Organizational behavior p. 13).
R. P. Mylthauf has written: 'The origins of chemistry'
P. Venkatesh has written: 'Police diaries, statements, reports, and investigations'
R. P. Browder has written: 'The origins of Soviet-American diplomacy'
Then p/q is a rational number.
G. P. GOOCH has written: 'DOCUMENTS ON THE ORIGINS OF THE WAR 1898-1914'
In Formal Logic proofs, the contradiction is represented with an inverted T (or upside-down T) as follows: ┴ The contradiction symbol can be introduced at any time a logical contradiction is encounterd, for example, all of the the following contradictory logical statements (using different symbols) can be replaced with the contradiction symbol: The ball is completely blue and the ball not completely blue. P ^ ¬P P & ~P P & !P P AND NOT P