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Tags
+-SH dead source49239 +-SH safe2242901 +-SH artist:reddgeist19 +-SH twilight sparkle367869 +-SH human262881 +-SH g42104426 +-SH book45372 +-SH breasts409161 +-SH busty twilight sparkle17086 +-SH chalkboard3771 +-SH classroom2323 +-SH cleavage48757 +-SH curvy10581 +-SH fancy mathematics264 +-SH female1881244 +-SH glasses93725 +-SH high res411654 +-SH humanized123290 +-SH math999 +-SH school2526 +-SH solo1484816 +-SH teacher1285
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Quantum mechanics, from the presence of the h-bar and the operators. Can’t tell precisely.