Essential
131Essential Pebbles, Volume 3 — Infobox Album Name = Essential Pebbles, Volume 3 Type = compilation Longtype = Artist = Released = 2000 Recorded = Mid 1960 s Genre = Garage rock, Psychedelic rock Length = Label = AIP Records Producer = Reviews = Last album = Essential Pebbles,… …
132Essential manifold — In mathematics, in algebraic topology and differential geometry, the notion of an essential manifold seems to have been first introduced explicitly in Mikhail Gromov s classic text in 83 (see below). DefinitionA closed manifold M is called… …
