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Tags
+-SH dead source53032 +-SH safe2276522 +-SH artist:reddgeist19 +-SH twilight sparkle370926 +-SH human267981 +-SH g42118993 +-SH book45918 +-SH breasts408895 +-SH busty twilight sparkle16998 +-SH chalkboard3762 +-SH classroom2295 +-SH cleavage48876 +-SH curvy10151 +-SH fancy mathematics263 +-SH female1906979 +-SH glasses96409 +-SH high res411323 +-SH humanized123699 +-SH math1005 +-SH school2532 +-SH solo1500006 +-SH teacher1298
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Quantum mechanics, from the presence of the h-bar and the operators. Can’t tell precisely.