collected vertex
21NP-complete — Euler diagram for P, NP, NP complete, and NP hard set of problems In computational complexity theory, the complexity class NP complete (abbreviated NP C or NPC) is a class of decision problems. A decision problem L is NP complete if it is in the… …
22Half-Life (video game) — Infobox VG title=Half Life caption=The box art for Half Life shows the title on a rusted orange background, below the Greek lambda letter. developer=Valve Software publisher=Sierra Studios Electronic Arts Valve Software designer= engine=GoldSrc… …
23Reuleaux tetrahedron — Animation of a Reuleaux tetrahedron, showing also the tetrahedron from which it is formed. Four spheres intersect to form a Reuleaux tetrahedron. The Reuleaux tetrahedron is the inter …
24Auditory brainstem response — The auditory brainstem response (ABR) is an auditory evoked potential extracted from ongoing electrical activity in the brain and recorded via electrodes placed on the scalp. The resulting recording is a series of vertex positive waves of which I …
25Gömböc — Gomboc redirects here. For the Slovene astrophysicist, see Andreja Gomboc. The mono monostatic gömböc in the stable equilibrium position A gömböc (pronounced [ˈɡømbøts] in Hungarian, sometimes spelled gomboc and pronounced GOM bock in English) is …
26Frameworks supporting the polyhedral model — Use of the polyhedral model within a compiler requires software to represent the objects of this framework (sets of integer valued points in regions of various spaces) and perform operations upon them (e.g., testing whether the set is empty). Two …
27chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
28number game — Introduction any of various puzzles and games that involve aspects of mathematics. Mathematical recreations comprise puzzles and games that vary from naive amusements to sophisticated problems, some of which have never been solved.… …
29projection — 1. A pushing out; an outgrowth or protuberance. 2. The referring of a sensation to the object producing it. 3. A defense mechanism by which a repressed complex in the individual is denied and conceived as belonging to another person, as when… …
30Nielsen–Schreier theorem — In group theory, a branch of mathematics, the Nielsen–Schreier theorem is the statement that every subgroup of a free group is itself free.[1][2][3] It is named after Jakob Nielsen and Otto Schreier. Contents …
