Quantum Mechanics for Mathematicians
《Quantum Mechanics for Mathematicians》 · 第 574 页 · Appendix B.1
By reverting the orientation of all arrows, one defines the opposite category, denoted \(\mathcal C^{\mathrm{op}}\).
Quantum Mechanics for Mathematicians
《Quantum Mechanics for Mathematicians》 · 第 574 页 · Appendix B.1
By reverting the orientation of all arrows, one defines the opposite category, denoted \(\mathcal C^{\mathrm{op}}\).
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