Semi-transition relations for semi-supermanifolds

Let MM be a semi-supermanifold represented by a semi-atlas of charts and semi-charts, with semi-transition functions Φαβ \Phi_{\alpha\beta} between local coordinate domains UαU_\alpha and UβU_\beta. On pairwise overlaps, triple overlaps, and quadruple overlaps, these functions satisfy the corresponding idempotent composition relations.

Semi-supermanifold semi-transition conjecture. On UαUβU_\alpha\cap U_\beta,

ΦαβΦβαΦαβ=Φαβ.\Phi_{\alpha\beta}\circ\Phi_{\beta\alpha}\circ\Phi_{\alpha\beta}=\Phi_{\alpha\beta}.

On UαUβUγU_\alpha\cap U_\beta\cap U_\gamma,

ΦαβΦβγΦγαΦαβ=Φαβ,\Phi_{\alpha\beta}\circ\Phi_{\beta\gamma}\circ\Phi_{\gamma\alpha}\circ\Phi_{\alpha\beta}=\Phi_{\alpha\beta}, ΦβγΦγαΦαβΦβγ=Φβγ,\Phi_{\beta\gamma}\circ\Phi_{\gamma\alpha}\circ\Phi_{\alpha\beta}\circ\Phi_{\beta\gamma}=\Phi_{\beta\gamma}, ΦγαΦαβΦβγΦγα=Φγα.\Phi_{\gamma\alpha}\circ\Phi_{\alpha\beta}\circ\Phi_{\beta\gamma}\circ\Phi_{\gamma\alpha}=\Phi_{\gamma\alpha}.

On UαUβUγUρU_\alpha\cap U_\beta\cap U_\gamma\cap U_\rho, the analogous four cyclic relations hold:

ΦαβΦβγΦγρΦραΦαβ=Φαβ,\Phi_{\alpha\beta}\circ\Phi_{\beta\gamma}\circ\Phi_{\gamma\rho}\circ\Phi_{\rho\alpha}\circ\Phi_{\alpha\beta}=\Phi_{\alpha\beta}, ΦβγΦγρΦραΦαβΦβγ=Φβγ,\Phi_{\beta\gamma}\circ\Phi_{\gamma\rho}\circ\Phi_{\rho\alpha}\circ\Phi_{\alpha\beta}\circ\Phi_{\beta\gamma}=\Phi_{\beta\gamma}, ΦγρΦραΦαβΦβγΦγρ=Φγρ,\Phi_{\gamma\rho}\circ\Phi_{\rho\alpha}\circ\Phi_{\alpha\beta}\circ\Phi_{\beta\gamma}\circ\Phi_{\gamma\rho}=\Phi_{\gamma\rho}, ΦραΦαβΦβγΦγρΦρα=Φρα.\Phi_{\rho\alpha}\circ\Phi_{\alpha\beta}\circ\Phi_{\beta\gamma}\circ\Phi_{\gamma\rho}\circ\Phi_{\rho\alpha}=\Phi_{\rho\alpha}.

These relations are proposed as the noninvertible replacement for the usual transition-function cocycle conditions. The source gives no resolution or further justification, so the status is open.

Sources & referencesView supporting material

Primary source

Steven Duplij, “Noninvertibility and ``Semi-'' Analogs of (Super) Manifolds, Fiber Bundles and Homotopies”, arXiv:q-alg/9609022 (1996).

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