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This is a list of calendars.Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories by cultural sphere or historical period; thus O'Neil (1976) distinguishes the groupings Egyptian calendars (Ancient Egypt), Babylonian calendars (Ancient Mesopotamia), Indian calendars (Hindu and Buddhist traditions of the Indian subcontinent ...
The vertex and anti-vertex are the points where the prime vertical intersects the ecliptic. A crucible symbol, 🜊, is used by Astrolog and the HamburgSymbols font Apparent retrograde motion: Retrograde motion ℞ ℞ U+211E: Symbol represents the apparent retrograde motion of a planet in an astrological chart: Lunar node: Ascending Node ...
Vertex (graph theory) A graph with 6 vertices and 7 edges where the vertex number 6 on the far-left is a leaf vertex or a pendant vertex. In discrete mathematics, and more specifically in graph theory, a vertex (plural vertices) or node is the fundamental unit of which graphs are formed: an undirected graph consists of a set of vertices and a ...
Equinox. A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or south of the equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west". This occurs twice each year, around 20 March and 23 September.
40 potential uniform polyhedra with degenerate vertex figures which have overlapping edges (not counted by Coxeter ); The uniform tilings (infinite polyhedra) 11 Euclidean convex uniform tilings; 28 Euclidean nonconvex or apeirogonal uniform tilings; Infinite number of uniform tilings in hyperbolic plane. Any polygons or 4-polytopes.
The most popular given names vary nationally, regionally, and culturally. Lists of widely used given names can consist of those most often bestowed upon infants born within the last year, thus reflecting the current naming trends , or else be composed of the personal names occurring most often within the total population .
The columns 'vertices', 'edges', ' radius ', ' diameter ', ' girth ', 'P' (whether the graph is planar ), χ ( chromatic number) and χ' ( chromatic index) are also sortable, allowing to search for a parameter or another. Wikimedia Commons has media related to Graphs by number of vertices. See also Graph theory for the general theory, as well ...
Compound of five great rhombihexahedra. Compound of five icosahedra. Compound of five octahedra. Compound of five octahemioctahedra. Compound of five small cubicuboctahedra. Compound of five small rhombicuboctahedra. Compound of five small rhombihexahedra. Compound of five small stellated dodecahedra.