The bid–ask spread is the difference between the prices quoted for an immediate sale and an immediate purchase for stocks, futures contracts, options, or currency pairs in some auction scenario.
Divine Proportions: Rational Trigonometry to Universal Geometry is a 2005 book by the mathematician Norman J. Wildberger on a proposed alternative approach to Euclidean geometry and trigonometry, called rational trigonometry.
Divine Proportions: Rational Trigonometry to Universal Geometryrational trigonometry
Strony widzące – termin stosowany w redakcji technicznej, DTP i poligrafii na dwie sąsiednie strony wielostronicowej publikacji poligraficznej, które są jednocześnie widoczne, gdy publikacja ta jest otwarta na którejś ze stron.
A frequently studied problem in discrete geometry is to identify ways in which an object can be covered by other simpler objects such as points, lines, and planes.
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