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

Blackboard Shots with Prefix "LeeP"


170909-094418: The Goldman-Turaev Lie bialgebra.

170401-103728: $pc$ injects into $pb$?

170401-100758: Solvable approximations as of now.

160820-104303: The 0-co case (2).

160820-102409: The 0-co case.

160820-100329: 1-smidgen sl2.

160514-125742: Miscellaneous.

130322-160303: A basis for the top homology of the pure braid group.

130322-154902: Snowflakes and the A-T and B-H relation.

130322-152406: Reducing Lie words.

130315-162754: The Drinfel'd double, ${\mathcal A}^v$, and ${\mathcal K}^v$.

130226-165551: gr and H (3).

130226-153758: gr and H (2).

130226-152206: gr and H.

121107-154518: The wheels part of the Hamburg invariant using the Euler method.

120719-180534: A co-homomorphic expansion for general groups (2).

120719-173800: A co-homomorphic expansion for general groups.

120719-171947: A non-expansion.

120418-180358: An additional constraint (3).

120418-172610: An additional constraint (2).

120418-171813: An additional constraint.

120418-170923: $S_1$ is determined.

120404-180022: Fox calculus and the Alexander polynomial.

120308-091304: A nice presentation for $PB_n$.

120222-172349: Multiplicativity of Z, round II (3).

120222-164658: Multiplicativity of Z, round II (2).

120222-162954: Multiplicativity of Z, round II.

120215-184314: Multiplicativity of Z (3).

120215-181041: Multiplicativity of Z (2).

120215-175650: Multiplicativity of Z.

111119-154149: The second half of the proof (11).

111119-145350: The second half of the proof (10).

111119-145341: The second half of the proof (9).

111119-130833: The second half of the proof (8).

111119-130823: The second half of the proof (7).

111119-123645: The second half of the proof (6).

111119-123633: The second half of the proof (5).

111119-115214: The second half of the proof (4).

111119-112931: The second half of the proof (3).

111119-112920: The second half of the proof (2).

111119-110739: The second half of the proof.

111101-162818: Expansions for Tr_3.

111028-175758: 1-Formality.

111028-164452: What are expansions?

111003-125243: The Kontsevich integral and the box-coproduct.

110915-084824: pvb_{n+1} is a free pvb_n module.

110907-165219: An alternative snake lemma argument.

110822-142309: The spectral sequence argument.

110803-122042: What does "syzygy complete" really means?

110727-125631: The X-Lemma.

110726-120247: The combinatorics of trees and chain-gangs.

110725-143156: A Resolution for PvB_n (6).

110725-123021: A Resolution for PvB_n (5).

110725-121802: A Resolution for PvB_n (4).

110725-120632: A Resolution for PvB_n (3).

110721-190348: A Resolution for PvB_n (2).

110721-181554: A Resolution for PvB_n.

110708-142715: A basic linear algebra factoid.

110421-170905: A small injectivity bug.

110418-163033: Is $I_F$ flat?

110414-165338: Lemma 5.

110407-163913: Bracelets and degree-doubling.

110407-113035: Homology of the little disk operad (7).

110406-180551: Homology of the little disk operad (6).

110406-172758: Homology of the little disk operad (5).

110405-182337: Homology of the little disk operad (4).

110405-180152: Homology of the little disk operad (3).

110405-174643: Homology of the little disk operad (2).

110405-173525: Homology of the little disk operad.

110314-180049: Thickened long knots.

110314-173138: Operads (2).

110314-171800: Operads.

110223-162150: Quadraticity (6).

110223-150507: Quadraticity (5).

110223-144042: Quadraticity (4).

110216-120556: Quadraticity (3).

110216-114056: Quadraticity (2).

110216-112329: Quadraticity.

110202-133653: $R^A$ and $\mathfrak R$ (2).

110202-131755: $R^A$ and $\mathfrak R$.

110202-130232: An exact hexagon.

110126-152609: Determining $\ker\delta$ (3).

110126-145936: Determining $\ker\delta$ (2).

110126-141849: Determining $\ker\delta$.

110118-145910: Hutchings redux (5).

110118-144637: Hutchings redux (4).

110118-143217: Hutchings redux (3).

110111-143043: A group whose gr isn't quadratic?

110107-160837: Hutchings redux (2).

110107-142826: Hutchings redux.

101219-123006: Finding $\mbox{ker}\,\delta^{\mbox{cok}}$ (3).

101219-115903: Finding $\mbox{ker}\,\delta^{\mbox{cok}}$ (2).

101219-114040: Finding $\mbox{ker}\,\delta^{\mbox{cok}}$.

101218-164256: More Hutchings diagrams.

101218-144830: Topological 4Ts are combinatorial?

101210-152937: $\ker\Delta$ and $\ker\delta$.

101126-095023: Hutchings' technique in the group case (6).

101126-092710: Hutchings' technique in the group case (5).

101126-091751: Hutchings' technique in the group case (4).

101119-155523: Hutchings' technique in the group case (3).

101119-151954: Hutchings' technique in the group case (2).

101119-150449: Hutchings' technique in the group case.

101112-160239: A presentation for powers of the augmentation ideal (5).

101112-151059: A presentation for powers of the augmentation ideal (4).

101112-145652: A presentation for powers of the augmentation ideal (3).

101112-144352: A presentation for powers of the augmentation ideal (2).

101112-143119: A presentation for powers of the augmentation ideal.

101105-121719: A presentation for the augmentation ideal.

101023-163110: The Hutchings approach for v-braids (2).

101023-155017: The Hutchings approach for v-braids.

100928-164442: Weight systems and invariants of v-Braids (3).

100928-162641: Weight systems and invariants of v-Braids (2).

100928-161937: Weight systems and invariants of v-Braids.

100922-111323: Acyclic diagrams according to EK, the weak topology.

100810-111709: A circuit algebra description of A^6T?

100804-123357: Twisting for a solution of Yang-Baxter.

100730-114619: Non-trivial cohomology in the complex for flat knots.

100730-112437: The Y HTC invariant.

100715-120051: A cohomology for flat braid-like tangles (4).

100715-111744: A cohomology for flat braid-like tangles (3).

100708-112552: A cohomology for flat braid-like tangles (2).

100708-104005: A cohomology for flat braid-like tangles.

100702-121936: A Jacobi theory for HTC.

100525-164137: The Pure Cactus Algebra.

100407-150717: Av mod HTC, for knots (2).

100407-142159: Av mod HTC, for knots.

100317-141337: How Place works.

091215-190003: On Etingof-Kazhdan, December 15 2009 (6).

091215-184734: On Etingof-Kazhdan, December 15 2009 (5).

091215-184724: On Etingof-Kazhdan, December 15 2009 (4).

091215-182504: On Etingof-Kazhdan, December 15 2009 (3).

091215-182455: On Etingof-Kazhdan, December 15 2009 (2).

091215-182439: On Etingof-Kazhdan, December 15 2009.

091207-104616: On Etingof-Kazhdan, December 7 2009 (6).

091207-104609: On Etingof-Kazhdan, December 7 2009 (5).

091207-102157: On Etingof-Kazhdan, December 7 2009 (4).

091207-102147: On Etingof-Kazhdan, December 7 2009 (3).

091207-100240: On Etingof-Kazhdan, December 7 2009 (2).

091207-100229: On Etingof-Kazhdan, December 7 2009.

091130-105858: On Etingof-Kazhdan, November 30 2009 (8).

091130-105843: On Etingof-Kazhdan, November 30 2009 (7).

091130-103304: On Etingof-Kazhdan, November 30 2009 (6).

091130-103255: On Etingof-Kazhdan, November 30 2009 (5).

091130-102054: On Etingof-Kazhdan, November 30 2009 (4).

091130-102045: On Etingof-Kazhdan, November 30 2009 (3).

091130-100051: On Etingof-Kazhdan, November 30 2009 (2).

091130-100038: On Etingof-Kazhdan, November 30 2009.

091123-105418: On Etingof-Kazhdan, November 23 2009 (11).

091123-103946: On Etingof-Kazhdan, November 23 2009 (10).

091123-103936: On Etingof-Kazhdan, November 23 2009 (9).

091123-102114: On Etingof-Kazhdan, November 23 2009 (8).

091123-102104: On Etingof-Kazhdan, November 23 2009 (7).

091123-102057: On Etingof-Kazhdan, November 23 2009 (6).

091123-102048: On Etingof-Kazhdan, November 23 2009 (5).

091123-095622: On Etingof-Kazhdan, November 23 2009 (4).

091123-095615: On Etingof-Kazhdan, November 23 2009 (3).

091123-095607: On Etingof-Kazhdan, November 23 2009 (2).

091123-095600: On Etingof-Kazhdan, November 23 2009.

091116-104914: On Etingof-Kazhdan, November 16 2009 (6).

091116-104903: On Etingof-Kazhdan, November 16 2009 (5).

091116-102654: On Etingof-Kazhdan, November 16 2009 (4).

091116-102645: On Etingof-Kazhdan, November 16 2009 (3).

091116-100345: On Etingof-Kazhdan, November 16 2009 (2).

091116-100333: On Etingof-Kazhdan, November 16 2009.

091110-175207: On Etingof-Kazhdan, November 10 2009 (6).

091110-174511: On Etingof-Kazhdan, November 10 2009 (5).

091110-173612: On Etingof-Kazhdan, November 10 2009 (4).

091110-171409: On Etingof-Kazhdan, November 10 2009 (3).

091110-165911: On Etingof-Kazhdan, November 10 2009 (2).

091110-163148: On Etingof-Kazhdan, November 10 2009.

091109-104814: On BEER, November 9 2009 (5).

091109-101546: On BEER, November 9 2009 (4).

091109-095950: On BEER, November 9 2009 (3).

091109-095843: On BEER, November 9 2009 (2).

091109-095832: On BEER, November 9 2009.

091103-185851: On Etingof-Kazhdan, November 3 2009 (5).

091103-181932: On Etingof-Kazhdan, November 3 2009 (4).

091103-180410: On Etingof-Kazhdan, November 3 2009 (3).

091103-174158: On Etingof-Kazhdan, November 3 2009 (2).

091103-170903: On Etingof-Kazhdan, November 3 2009.

091102-110203: On BEER, November 2 2009 (11).

091102-110130: On BEER, November 2 2009 (10).

091102-104520: On BEER, November 2 2009 (9).

091102-104505: On BEER, November 2 2009 (8).

091102-103154: On BEER, November 2 2009 (7).

091102-101728: On BEER, November 2 2009 (6).

091102-101720: On BEER, November 2 2009 (5).

091102-101253: On BEER, November 2 2009 (4).

091102-100649: On BEER, November 2 2009 (3).

091102-100636: On BEER, November 2 2009 (2).

091102-100623: On BEER, November 2 2009.

091027-171352: On Etingof-Kazhdan, October 27 (3).

091027-165428: On Etingof-Kazhdan, October 27 (2).

091027-162825: On Etingof-Kazhdan, October 27.

091026-110907: On BEER, October 26 2009 (6).

091026-104610: On BEER, October 26 2009 (5).

091026-104602: On BEER, October 26 2009 (4).

091026-103426: On BEER, October 26 2009 (3).

091026-101552: On BEER, October 26 2009 (2).

091026-101540: On BEER, October 26 2009.

091020-173518: On Etingof-Kazhdan, October 20 (6).

091020-172747: On Etingof-Kazhdan, October 20 (5).

091020-170438: On Etingof-Kazhdan, October 20 (4).

091020-165350: On Etingof-Kazhdan, October 20 (3).

091020-164048: On Etingof-Kazhdan, October 20 (2).

091020-162648: On Etingof-Kazhdan, October 20.

091019-110326: On BEER, October 19 2009 (3).

091019-104003: On BEER, October 19 2009 (2).

091019-103951: On BEER, October 19 2009.

091013-180055: On Etingof-Kazhdan, October 13 (5).

091013-175414: On Etingof-Kazhdan, October 13 (4).

091013-174020: On Etingof-Kazhdan, October 13 (3).

091013-171200: On Etingof-Kazhdan, October 13 (2).

091013-163002: On Etingof-Kazhdan, October 13.

091008-123312: On BEER, October 8 2009 (4).

091008-120255: On BEER, October 8 2009 (3).

091008-114445: On BEER, October 8 2009 (2).

091008-112949: On BEER, October 8 2009.

091006-180542: On Etingof-Kazhdan, October 6 (6).

091006-173931: On Etingof-Kazhdan, October 6 (5).

091006-171945: On Etingof-Kazhdan, October 6 (4).

091006-165546: On Etingof-Kazhdan, October 6 (3).

091006-163852: On Etingof-Kazhdan, October 6 (2).

091006-162927: On Etingof-Kazhdan, October 6.

090929-171613: On Etingof-Kazhdan, September 29 (6).

090929-164921: On Etingof-Kazhdan, September 29 (5).

090929-164336: On Etingof-Kazhdan, September 29 (4).

090929-163405: On Etingof-Kazhdan, September 29 (3).

090929-162051: On Etingof-Kazhdan, September 29 (2).

090929-155421: On Etingof-Kazhdan, September 29.

090923-135318: The expansion problem for r/g tangles.

090904-120959: Descending Virtual Braids.

090901-154711: Homological braidors (3).

090901-151423: Homological braidors (2).

090901-150159: Homological braidors.

090610-152611: A PBW Basis for Aw (2).

090610-150110: A PBW Basis for Aw.

090608-160258: Aw is not monomial-PBW (2).

090608-142537: Aw is not monomial-PBW.

090514-135931: Koszulness for non-PBW (4).

090514-133554: Koszulness for non-PBW (3).

090422-133534: Koszulness for non-PBW (2).

090422-132405: Koszulness for non-PBW.

090318-155819: Poincare's Lemma redone (6).

090318-154832: Poincare's Lemma redone (5).

090318-154034: Poincare's Lemma redone (4).

090318-152900: Poincare's Lemma redone (3).

090318-150515: Poincare's Lemma redone (2).

090318-145850: Poincare's Lemma redone.

090311-163047: A homotopy for PBW.

090306-123915: KV and tangential differential operators.

090209-114802: Koszulness of small algebras.

090202-125427: A homotopy for Koszulness (4).

090126-115759: A homotopy for Koszulness (3).

090126-113701: A homotopy for Koszulness (2).

090126-112746: A homotopy for Koszulness.

081212-143939: Naming parts of the lattice.

081128-123709: Degree 4 Relations (2).

081128-121324: Degree 4 Relations.

081121-142016: Higher essential relations.

081107-115005: Quadratic Algebras and overlaps.

081031-114400: Completions of a group.

081030-143643: On the EHKR paper (5).

081030-134729: On the EHKR paper (4).

081030-133107: On the EHKR paper (3).

081030-132256: On the EHKR paper (2).

081030-132245: On the EHKR paper.

081022-160941: The Koszul Complex.

081022-150517: A non-Koszul algebra.

080805-100112: 1+1=2.

080729-104407: Some combinatorics.

080711-105807: A is isomorphic to Aw'? (2)

080704-103611: A is isomorphic to Aw'?

080702-132753: Towards a PBW basis for horizontal w-arrow diagrams (2).

080702-124438: Towards a PBW basis for horizontal w-arrow diagrams.

080626-104647: Counting PBW elements.

080527-163408: Polishchuk's theorem for Ahor?

080520-111532: Alek-Tor spaces.

080520-102856: Horizontal cohomology.

080415-113735: Quadratic Algebras (2).

080415-103815: Quadratic Algebras.

080407-142000: Resolution of A_3, formality.

080314-123029: BCH in arrow diagrams.

080307-164557: The frozen foot braidor equations and the Kurlin solution.

080229-120610: Acyclicity in Aarrow and Barrow.

080222-115052: The frozen foot braidor equations.

080204-140210: A simple group theory proof using expansions.

080125-144941: Braidors with no linear term.

071219-170039: Trying to understand Hall bases

071214-144306: "functional" application of linear laws.