Propositional formula — In propositional logic, a propositional formula is a type of syntactic formula which is well formed and has a truth value. If the values of all variables in a propositional formula are given, it determines a unique truth value. A propositional… … Wikipedia
river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… … Universalium
Dalek variants — … Wikipedia
formal logic — the branch of logic concerned exclusively with the principles of deductive reasoning and with the form rather than the content of propositions. [1855 60] * * * Introduction the abstract study of propositions, statements, or assertively used … Universalium
NOTATION MATHÉMATIQUE — Pour connaître une langue naturelle, il n’est pas nécessaire d’en apprendre l’histoire ni, pour comprendre sa littérature, de faire l’étude historique de la grammaire et du vocabulaire. À cet égard, le langage mathématique, en raison de son… … Encyclopédie Universelle
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
RUSSELL (B.) — La longue vie qui fut accordée à Russell, l’alacrité avec laquelle il a supporté celle ci ont fait de lui un personnage hors série. Toujours en quête de renouvellement, il était, par l’ampleur de sa réflexion et la franchise de son action morale… … Encyclopédie Universelle
physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… … Universalium
technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… … Universalium
property law — Introduction principles, policies, and rules by which disputes over property are to be resolved and by which property transactions may be structured. What distinguishes property law from other kinds of law is that property law deals with… … Universalium
slant — vb Slant, slope, incline, lean are comparable when they mean to diverge or cause to diverge from a vertical or horizontal line. Slant carries the sharpest and clearest implication of such divergence of any of these terms but it carries no… … New Dictionary of Synonyms