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Tags
+-SH dead source51614 +-SH safe2272713 +-SH artist:reddgeist19 +-SH twilight sparkle371978 +-SH human270412 +-SH g42131326 +-SH book45993 +-SH breasts417069 +-SH busty twilight sparkle17366 +-SH chalkboard3812 +-SH classroom2385 +-SH cleavage49713 +-SH curvy10909 +-SH fancy mathematics263 +-SH female1914922 +-SH glasses95989 +-SH high res413239 +-SH humanized124664 +-SH math1005 +-SH school2575 +-SH solo1509527 +-SH teacher1314
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Quantum mechanics, from the presence of the h-bar and the operators. Can’t tell precisely.