Brinkmann coordinates
A particular coordinate system for a spacetime belonging to the family of pp-wave metrics.
(baseball) A flat, pentagonal, rubber object placed at the center of the batter's box, which is used as a basis for judging pitched strikes and balls, and the touching of which by a runner advancin...
(euphemistic) The word rape, regarded as a vulgar or taboo word. / (euphemistic) The word retard, regarded as a vulgar or taboo word.
Not awarded a medal.
ブリンクマン座標系を用いると、pp波計量をヌル測地線の構造が明らかになる形で表すことができる。
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DiQt（ディクト）
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