Test categories: local context

Project map · Chapter map · Full theorem DAG · Open textbook statement

This local map shows one dependency hop in either direction. The highlighted item is the current focus.

ready to state1Nothing it needs is blocked, so the statement can be written in Lean.planned20Described in the blueprint only.

graph LR n0("Sheaf cohomology bounds"):::can_state n1["Test categories"]:::planned n2("Simplex generators"):::planned n3("Verdier duality on test categories"):::planned n4("Direct images and open extension"):::planned n5("Products with the interval"):::planned n6("Two endpoint forms"):::planned n7("Homotopy invariance"):::planned n8("Point groups"):::planned n9("Cutoff"):::planned n10("Objects supported in an open set"):::planned n11("Witt localization"):::planned n12("Contractible quotient"):::planned n13("Germ description"):::planned n14("Open cover dense inclusion"):::planned n15("Bounded comparison"):::planned n16("Rational sphere calculation"):::planned n17("Signature on a finite relation"):::planned n18("Fixed sphere lattice"):::planned n19("Action of degree"):::planned n20("Sign conventions"):::planned n0 -.-> n1 n10 --> n13 n10 --> n14 n10 --> n11 n9 -.-> n10 n9 -.-> n13 n9 -.-> n14 n13 -.-> n14 n14 -.-> n15 n14 -.-> n16 n11 -.-> n15 n11 -.-> n12 n11 -.-> n16 n6 -.-> n7 n7 -.-> n15 n7 -.-> n12 n7 -.-> n19 n7 -.-> n16 n5 -.-> n6 n2 -.-> n5 n2 -.-> n3 n2 -.-> n8 n1 --> n10 n1 --> n9 n1 --> n13 n1 --> n14 n1 --> n11 n1 --> n6 n1 --> n7 n1 --> n5 n1 --> n20 n1 --> n2 n1 --> n3 n1 --> n4 n1 --> n15 n1 --> n12 n1 --> n19 n1 --> n17 n1 --> n8 n1 --> n18 n1 --> n16 n3 -.-> n10 n3 -.-> n4 n4 -.-> n10 n4 -.-> n9 n4 -.-> n14 n4 --> n7 n4 -.-> n12 n4 -.-> n19 n15 -.-> n18 n17 -.-> n18 n8 -.-> n15 n8 -.-> n12 n8 -.-> n16 n18 --> n19 n16 -.-> n17 n16 -.-> n18 click n0 "../../../roadmap/background/index.html#sheaf-cohomology-bounds" "Sheaf cohomology bounds — 1 item · 1 ready to state" class n1 focus click n1 "../../../roadmap/sheaf-categories/index.html#test-categories" "Test categories — 1 item · 1 planned" click n2 "../../../roadmap/sheaf-categories/index.html#simplex-generators" "Simplex generators — 1 item · 1 planned" click n3 "../../../roadmap/sheaf-categories/index.html#test-duality" "Verdier duality on test categories — 1 item · 1 planned" click n4 "../../../roadmap/sheaf-categories/index.html#test-pushforward" "Direct images and open extension — 1 item · 1 planned" click n5 "../../../roadmap/sheaf-categories/index.html#interval-products" "Products with the interval — 1 item · 1 planned" click n6 "../../../roadmap/sheaf-categories/index.html#endpoint-forms" "Two endpoint forms — 1 item · 1 planned" click n7 "../../../roadmap/sheaf-categories/index.html#homotopy-invariance" "Homotopy invariance — 1 item · 1 planned" click n8 "../../../roadmap/sphere-lattice/index.html#point-groups" "Point groups — 1 item · 1 planned" click n9 "../../../roadmap/localization/index.html#cutoff" "Cutoff — 1 item · 1 planned" click n10 "../../../roadmap/localization/index.html#compact-support" "Objects supported in an open set — 1 item · 1 planned" click n11 "../../../roadmap/localization/index.html#witt-localization" "Witt localization — 1 item · 1 planned" click n12 "../../../roadmap/sphere-lattice/index.html#contractible-quotient" "Contractible quotient — 1 item · 1 planned" click n13 "../../../roadmap/localization/index.html#germs" "Germ description — 1 item · 1 planned" click n14 "../../../roadmap/localization/index.html#open-cover" "Open cover dense inclusion — 1 item · 1 planned" click n15 "../../../roadmap/sphere-lattice/index.html#bounded-comparison" "Bounded comparison — 1 item · 1 planned" click n16 "../../../roadmap/sphere-lattice/index.html#sphere-rank" "Rational sphere calculation — 1 item · 1 planned" click n17 "../../../roadmap/sphere-lattice/index.html#generic-signature" "Signature on a finite relation — 1 item · 1 planned" click n18 "../../../roadmap/sphere-lattice/index.html#sphere-lattice" "Fixed sphere lattice — 1 item · 1 planned" click n19 "../../../roadmap/sphere-lattice/index.html#degree-action" "Action of degree — 1 item · 1 planned" click n20 "../../../roadmap/sheaf-categories/index.html#sign-conventions" "Sign conventions — 1 item · 1 planned"