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18D25 - Category theory; homological algebra :: Categories with structure :: Strong functors, strong adjunctions

homotopy groupoids and crossed complexes: non-commutative structures in higher dimensional algebra (HDA) owned by bci1 mathematical programs for developing quantum gravity theories owned by bci1 organismic supercategories and super-complex systems biodynamics-1 owned by bci1 quantum geometry owned by bci1 quantum gravity theories owned by bci1 quantum groupoids owned by bci1 quantum Riemannian geometry owned by bci1 quantum topos owned by bci1 space-time quantization problems in quantum gravity theories owned by bci1
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