设想如果狄拉克健在,并出他的《量子力学原理》第⑤版, 他会将Ket-bra符号的积分方法补充到他的书里吗? 这个问题供读者们思考。 我这里介绍该书的初版是1930年,到1958年出第四版。对于他的符号法,狄拉克曾说: The symbolic method, which deals directly in an abstract way with the quantities of fund ...
教与学任何一门课,必须先了解其用语(notation)。量子论的用语是狄拉克符号。狄拉克在年迈时曾回忆:With regard to this notation, I had to face the problem of writing down symbols which would contain an explicit reference to those factors which it was important to mention explicitly, and which left un ...