Orientifold
In Theory of the cords, a orientifold is a construction generalizing the concept of Orbifold and which consists in combining a transformation of parity of the Feuille of universe of the cord (which exchanges sectors holomorphic and anti-holomorphic on this one) with a transformation of parity of the Espace-temps.
References
- , chapters 8,10 and 13.
See too
- Plan orientifold
- Orbifold
- Theory of the cords
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