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Tags
+-SH dead source53029 +-SH safe2276473 +-SH artist:reddgeist19 +-SH twilight sparkle370923 +-SH human267974 +-SH g42118962 +-SH book45917 +-SH breasts408874 +-SH busty twilight sparkle16997 +-SH chalkboard3762 +-SH classroom2295 +-SH cleavage48874 +-SH curvy10151 +-SH fancy mathematics263 +-SH female1906932 +-SH glasses96405 +-SH high res411319 +-SH humanized123699 +-SH math1005 +-SH school2532 +-SH solo1499953 +-SH teacher1298
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Quantum mechanics, from the presence of the h-bar and the operators. Can’t tell precisely.