Mapping class groups of non-orientable surfaces for beginners
classification
🧮 math.GT
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classgroupsmappingnon-orientablesurfacesaddressedapproachbeginners
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The present paper are the notes of a mini-course addressed mainly to non-experts. It purpose it to provide a first approach to the theory of mapping class groups of non-orientable surfaces.
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Cited by 1 Pith paper
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Transition between 2D Symmetry Protected Topological Phases on a Klein Bottle
Inserting a symmetry defect along the orientation-reversing cycle on a Klein bottle in a 2D Z2 SPT phase induces an extra ground state charge that persists at the transition to the trivial phase, causing exact two-fol...
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