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2. List of logic symbols - Wikipedia

   en.wikipedia.org/wiki/List_of_logic_symbols

   The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics. Additionally, the subsequent columns contains an informal explanation, a short example, the Unicode location, the name for use in HTML documents, [1] and the LaTeX symbol.

3. Predicate (mathematical logic) - Wikipedia

   en.wikipedia.org/wiki/Predicate_(mathematical_logic)

   A predicate is a statement or mathematical assertion that contains variables, sometimes referred to as predicate variables, and may be true or false depending on those variables’ value or values. In propositional logic, atomic formulas are sometimes regarded as zero-place predicates. [1] In a sense, these are nullary (i.e. 0-arity) predicates.

4. First-order logic - Wikipedia

   en.wikipedia.org/wiki/First-order_logic

   First-order logic—also called predicate logic, predicate calculus, quantificational logic—is a collection of formal systems used in mathematics, philosophy, linguistics, and computer science. First-order logic uses quantified variables over non-logical objects, and allows the use of sentences that contain variables.

5. Propositional function - Wikipedia

   en.wikipedia.org/wiki/Propositional_function

   In propositional calculus, a propositional function or a predicate is a sentence expressed in a way that would assume the value of true or false, except that within the sentence there is a variable (x) that is not defined or specified (thus being a free variable), which leaves the statement undetermined.

6. Mathematics - Wikipedia

   en.wikipedia.org/wiki/Mathematics

   The apparent plural form in English goes back to the Latin neuter plural mathematica , based on the Greek plural ta mathēmatiká (τὰ μαθηματικά) and means roughly "all things mathematical", although it is plausible that English borrowed only the adjective mathematic(al) and formed the noun mathematics anew, after the pattern of ...

7. Drugmaker AstraZeneca names new China chief to replace ...

   www.aol.com/drugmaker-astrazeneca-names-china...

   British drugmaker AstraZeneca has appointed a new China head, replacing a former executive who has been detained by authorities in the country.