© | Dror Bar-Natan: Academic Pensieve: Blackboard Shots: Random

Blackboard Shots with Prefix "Halacheva"


160622-184317: R1 in the long case.

160220-140520: Gassner for non-pure braids.

160220-133406: Some abstraction.

160220-125530: Degrees 0 and 1 on braids.

151104-132413: Generalized Cramer.

151016-140339: Co-equilizers.

150911-145102: $\Gamma$ and Jana.

150812-104216: Interpreting $\Gamma$ calculus as a scattering process.

150624-125225: Affine group maps.

150624-095245: LCS expansions.

150518-132646: Traces in $\alpha$ and division in $FL$.

150511-164152: $\tau$-calculus.

150408-160259: $\sigma$-calculus.

150306-110641: Closed components.

150112-161816: D01-Calculus.

150105-174807: A plan for a paper.

141016-105717: $\eta$-calculus.

141009-104931: Some Unitarity of Gassner computations.

141002-110952: A gluing formula for the degrees 0 and 1 of Jana's invariant.

140925-111339: Deriving skein relations.

140925-111202: Gluing in Jana-calculus (2).

140925-111201: Gluing in Jana-calculus.

140911-101231: The generalized Cramer's rule (4).

140911-100239: The generalized Cramer's rule (3).

140911-092251: The generalized Cramer's rule (2).

140911-091732: The generalized Cramer's rule.

140823-090300: Minors of the Alexander matrix.

140725-132507: The Gassner Invariant (2).

140725-130450: The Gassner Invariant.

140623-164704: The Kerler-Wang paper (3).

140623-161947: The Kerler-Wang paper (2).

140623-160923: The Kerler-Wang paper.

140605-140255: Why is Gassner calculus integral?

140605-133341: $10_{103}$.

140418-134924: A binary choice.

140109-135803: Levine's formula for the MVA (2).

131219-110640: Levine's formula for the MVA.

131128-024042: Link invariants in $\beta$ calculus.

131028-103228: $m^{xy}_z$ in Jana's calculus.

131026-094531: The obvious Jana to $\Lambda$ map (2).

131026-094530: The obvious Jana to $\Lambda$ map.

131018-145843: Comparing Jana's calculus with $\Lambda$-calculus (2).

131018-143914: Comparing Jana's calculus with $\Lambda$-calculus.

130910-144242: A morphism between circuit algebras (3).

130910-143121: A morphism between circuit algebras (2).

130902-163202: A morphism between circuit algebras.

130830-153203: The MVA is finite type.

130823-170519: $\Lambda$-calculus.

130802-124746: $\beta_b^0$.

130802-122225: sl and rot.

130510-113105: The HKR invariant (2).

130510-105755: The HKR invariant.

130320-141910: Discussion with Etingof.

130305-145703: Double variety.

130226-120559: Comparing 'We' with 'RT' (3).

130212-114325: Comparing 'We' with 'RT' (2).

130128-155907: Comparing 'We' with 'RT'.

130111-155742: An invariant for tangles in a manifold with boundary?

121217-154642: The group-ring case (2).

121217-153231: The group-ring case.

121210-161524: The Heegaard Category (3).

121207-133103: The Heegaard Category (2).

121207-130500: The Heegaard Category.

121207-125352: Contraction graphs.

121207-124402: Moves on bordisms.

121126-175516: Heegaard diagrams and Hopf diagrams.

121119-174224: Integrals.

121119-172736: Proof of Invariance.

121119-164410: Some Hopf-algebra lemmas (2).

121119-163254: Some Hopf-algebra lemmas.

121112-173422: The Invariant (2).

121112-170646: The Invariant.

121112-165623: Tensorial state models for Hopf algebras.

121112-164949: Tensorial state models.

121105-172841: Heegaard Diagrams (6).

121105-165256: Heegaard Diagrams (5).

121029-170839: Heegaard Diagrams (4).

121029-165126: Heegaard Diagrams (3).

121029-163924: Heegaard Diagrams (2).

121029-163029: Heegaard Diagrams.

120911-173618: Slicing the space of representations.

120911-163348: A not-very-useful graphical notation.

120622-134352: The $D(G)$ invariant of a single crossing.

120531-165017: Drinfel'd double invariants, universally and not (5).

120510-165811: Drinfel'd double invariants, universally and not (4).

120503-163510: Drinfel'd double invariants, universally and not (3).

120426-170635: Drinfel'd double invariants, universally and not (2).

120221-162345: Drinfel'd double invariants, universally and not.

120214-164034: A 3-cocycle for cyclic groups (2).

120109-151100: A 3-cocycle for cyclic groups.

120109-145035: Braids and the Drinfel'd double.

111207-150307: Group cohomology of cyclic groups.

111124-160352: G^E/G^V.

111117-162936: The twisted quantum double.

111110-162849: The Drinfel'd double plan (2). (more...)

111110-153914: The Drinfel'd double plan.

111103-155008: Deframing in ${\mathcal A}^u$ (2).

111019-150449: Deframing in ${\mathcal A}^u$.

090423-130418: A page from the braid atlas.

080912-105847: More on the virtue.

080805-141801: Induction for diagrams. (more...)

080805-135354: Inside lemma 2.7.

080728-141355: Cleaning kinky trees.

080704-120122: Examples of trees.

080702-111757: The tentative Property alpha.

080609-110628: The construction of P (2).

080527-150919: The construction of P.

080526-140841: The definition of finite type.

080304-154327: The construction of purple.

080219-153645: The Descending Realization.

080205-153936: The map TP from virtual knot diagrams to knots.

080111-160938: More on S and Virtualize.

071218-121134: S and Sinv