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

Blackboard Shots with Prefix "VanDerVeen"


180420-121740: Matemale planning.

180419-150725: Today's to do list.

180419-150724: The spinner relations.

180418-111501: Some calculations.

180417-100734: GDO examples.

180415-120451: More on $y\to x^{-1}$ (4).

180415-120450: More on $y\to x^{-1}$ (3).

180415-120449: More on $y\to x^{-1}$ (2).

180415-120448: More on $y\to x^{-1}$.

180414-144005: The canonical form with $y\to x^{-1}$.

180411-115528: GDO stories (2).

180411-112521: GDO stories.

180402-104238: Replacing $y$ by $x^{-1}$.

180318-102946: Regrets.

180227-104921: Majid's $W$ (3).

180227-102859: Majid's $W$ (2).

180227-100033: Majid's $W$.

180223-105213: The linear Logos (2).

180215-100005: The linear Logos.

180213-114746: Docile-Gaussian.

180130-102650: Integration in the group-ring case.

180124-104401: Heegaard diagrams and Hopf words, $V_2$ using meta-monoids.

180115-095038: The plans with Dylan.

180110-100145: From CS to Au.

180108-100436: Twisting, co-multiplying, spinning.

171219-101626: Action and pairing.

171213-104420: The sl(N) weight system.

171206-100026: Inner products as double integrals.

171111-105056: gcs-rvt (2).

171111-100942: gcs-rvt.

171107-100120: The differential of the exponential.

171101-094400: Dequantization.

171026-095012: Difference-differential equations.

171017-100143: Pushforwards and the Laplace transform.

171011-100349: Failing with representation theory.

171004-093727: Pushforwards and Gaussian pairing (2).

171004-092638: Pushforwards and Gaussian pairing.

171004-091156: What the world should look like.

171004-084508: Non-injectivity and the antipode.

170927-100119: ${\mathcal U}_\hbar$ and gr ${\mathcal U}_\hbar$.

170927-094859: Ribbons.

170927-093707: Contracting instead of approximating by solvable.

170920-094603: OU and QUEA.

170912-095252: Drinfel'd-Kohno and Cartan (2).

170912-091507: Drinfel'd-Kohno and Cartan.

170822-072232: Trading non-commutativity to non-linearity.

170818-040005: Cartan invariance in the q-case.

170802-092154: Pushforward of distributions.

170721-095009: Random.

170719-094015: Quantizing at $\beta=0$.

170712-102044: $a\Delta$.

170710-101106: Solvable-split-nilpotent? (2)

170710-092953: Solvable-split-nilpotent?

170630-100213: Deformning hurded yax.

170630-093048: Hurding yax.

170629-161651: Alexander multi-stitching.

170627-144409: Alternative notations.

170623-145854: The Gaussian pairing principle (2).

170623-143123: The Gaussian pairing principle.

170623-135025: Reordering with ODEs (9).

170622-155815: The Drinfel'd element (6).

170622-152133: The Drinfel'd element (5).

170622-142424: The Drinfel'd element (4).

170622-113622: The Drinfel'd element (3).

170622-104449: Deforming Weyl algebras.

170622-095607: Bootstrapping F.

170622-085601: Reordering with ODEs (8).

170621-190120: Reordering with ODEs (7).

170621-184847: Reordering with ODEs (6).

170620-212242: Reordering with ODEs (5).

170620-183130: Reordering with ODEs (4).

170620-170855: Reordering with ODEs (3).

170620-163408: Reordering with ODEs (2).

170620-150826: Reordering with ODEs.

170620-115703: Water dancing (3).

170620-112342: Water dancing (2).

170620-104750: Water dancing.

170620-095053: Deriving Weyl.

170620-092320: Reordering exponentials.

170619-112439: Benkart-Witherspoon 2-parameter quantum groups (2).

170616-115856: Benkart-Witherspoon 2-parameter quantum groups.

170616-094846: Which way do we go?

170615-114316: Deformed Weyl algebras.

170615-110157: The antipode of exponentials (3).

170615-101642: The antipode of exponentials (2).

170614-153454: The antipode of exponentials.

170614-132002: The co-product of exponentials (3).

170614-112438: The co-product of exponentials (2).

170614-103510: The co-product of exponentials.

170613-184515: The Drinfel'd element (2).

170613-154100: The Drinfel'd element.

170613-141539: Which way the wake goes?

170612-173359: Quasi-triangularity.

170612-155902: Random.

170605-112555: Heisenberg and pairings.

170605-104935: $SL_q(2)$.

170529-164209: An Alexander stitching formula.

170508-110834: Nilpotent approximation.

170504-153033: Quesne's formula.

170424-105704: Meta-dual-pairs.

170419-113409: Symmetrized vs. ordered.

170412-100244: The Drinfeld Double.

170405-101118: OU tangles (2).

170405-093020: OU tangles.

170330-111349: Gaussian pairing.

170330-103057: The Drinfel'd double.

170323-112534: Gaussian gluing (2).

170323-104147: Gaussian gluing.

170316-105750: q-exponentials.

170311-171354: Unitarity.

170311-165240: The problem with quantum groups.

170311-162538: Random

170306-112116: Re-ordering in sl(2).

170302-105430: Higher degrees arise in higher algebras (3).

170302-103723: Higher degrees arise in higher algebras (2).

170302-102242: Higher degrees arise in higher algebras.

170223-113814: How determinants arise.

170223-111527: More general gluings of quadratics.

170223-105738: Ado for ${\mathfrak g}_1$.

170221-113909: The internal kernel for ${\mathcal A}^w$

170221-111258: Other solvable algebras.

170221-110142: The expected gln theorem.

170221-104720: Avoiding v-tangles.

170213-132632: Yoshikawa presentations.

170213-105017: Gaussian pairing (3).

170213-103908: Gaussian pairing (2).

170213-102559: Gaussian pairing.

170204-165508: The Cartan criterion.

170116-112638: Misc.

170109-111348: Realizations within Heisenberg algebras (2).

170109-110047: Realizations within Heisenberg algebras.

170109-104407: Divided differences.

161227-105906: What to expect at higher loops.

161213-161644: Kw at fixed linking.

161213-154512: Pairings in Au and Aw.

161124-121231: $q\Delta$ in ${\mathcal A}^w$.

161118-095033: $R^u$ and $R^w$, R2 and $S$.

161116-102639: $q\Delta$.

161116-100008: RVT (2).

161116-094447: RVT.

161109-171217: Working on the genus bound (2).

161109-095539: Working on the genus bound.

161102-113040: Seifert formulas (2).

161026-112111: Seifert formulas.

161013-133246: Rozansky's approach.

161006-111205: Alexander half densities.

160929-110658: The c-pattern.

160922-105559: Rotational Virtual Knots.

160915-110534: $\theta$ and unitarity.

160915-105134: Planar gluings.

160906-114130: $R$ or $V$? (2)

160906-111645: $R$ or $V$?

160812-110655: The $ax+b$ exponential.

160812-103541: The caup equations (2).

160812-102917: The caup equations.

160807-193013: w stuff.

160807-180545: The slide-under relation.

160807-171850: Mwu and Muw (3).

160807-163104: Mwu and Muw (2).

160807-162317: Mwu and Muw.

160806-154238: cuw cuw.

160805-145346: Logos

160805-113949: The key 1-co computation (3).

160804-152407: The key 1-co computation (2).

160804-111732: The key 1-co computation.

160804-100419: Differentiations.

160803-155603: Stitching (2).

160803-153000: Stitching.

160803-151020: The hard core $uw$ relation.

160803-134626: Some $c$ commutation relations.

160803-101237: An example of ${\mathbb E}$ in 1-co.

160802-183928: Implementation notes for 0-co in BPQ formalism.

160802-102109: Quantum double formulas.

160802-084942: Tuesday to do.

160801-095228: Hopf-calculus.

160731-180741: The $sm_q sl(2)$ invariant (2). (more...)

160731-121550: The $sm_q sl(2)$ invariant. (more...)

160731-113245: Quantum $sl_2$ (2).

160731-102318: Quantum $sl_2$.

160731-093843: The lagrangian formalism.

160730-181301: Proving commutation relations (2).

160730-175309: Proving commutation relations.

160730-162920: The quantum double (3).

160730-160854: The quantum double (2).

160730-152435: The quantum double.

160730-144644: Manipulating lagrangians (2).

160730-142321: Manipulating lagrangians.

160724-145736: Virtual caps and cups.

160714-111823: Random.

160630-112645: Links and co-invariants.

160630-110708: Polarization.

160630-104629: Scapegoating and KBH.

160622-115312: Random (2).

160615-105212: Random.

160610-103623: Doubling.

160603-114346: Turbo-Gassner (5).

160603-111519: Turbo-Gassner (4).

160603-110854: Turbo-Gassner (3).

160603-105446: Turbo-Gassner (2).

160603-101741: Turbo-Gassner.

160527-105408: Process diagrams and stitching for 0-co.

160527-104130: Yang-Baxter algebras and doubles of Lie bialgebras. (more...)

160520-095432: $J$ and $\Delta_q$.

160513-100130: Renormalizing ${\mathcal U}({\mathfrak g})$. (more...)

160513-095744: The polynomiality of $R$.

160513-094046: The double of the Borel.

160505-125742: Random.

160421-104129: Some representation theory.

160421-100738: Towards proving Jacobi from meta-Jacobi.

160414-102520: Minimal scattering.

160414-094440: Random stuff.

160408-103633: Attempts to prove Jacobi for the Lie algebra of a meta-Lie algebra.

160401-100337: Gauss-Gassner-Alexander (2).

160401-094300: Gauss-Gassner-Alexander.

160318-095746: $\Box$ and direct sums of Lie algebras.

160304-100231: Identities in meta-Lie algebras (2).

160219-112418: Identities in meta-Lie algebras.

160219-105741: Gauss-Gassner formulas (2).

160219-103323: Gauss-Gassner formulas.

160203-090206: Meta Lie algebras (2).

160203-083348: Meta Lie algebras.

160127-090342: Deriving the stitching formula for the scalar part.

160127-082827: Deriving the stitching formula for scattering.

160121-085907: Unitarity in ${\mathcal A}^u$.

160121-083531: The meta-cocycle.

160114-085907: Backie issues.

160107-085034: U, UU, and MM.

160107-085033: The 1-co relations.

160106-113352: Annular braids.

160106-084900: Scatter and glow (3).

160106-084859: Scatter and glow (2).

160106-084857: Scatter and glow.

160106-084855: Associators and 6j (2).

160106-084854: Associators and 6j.

160106-030015: Virtual spines (2).

160106-030011: Virtual spines.

160106-030004: Unitarity.

160104-155317: One-Co stories, day 1 (7).

160104-155316: One-Co stories, day 1 (6).

160104-155315: One-Co stories, day 1 (5).

160104-155314: One-Co stories, day 1 (4).

160104-155313: One-Co stories, day 1 (3).

160104-155312: One-Co stories, day 1 (2).

160104-155311: One-Co stories, day 1.

111109-165720: Spin Networks (5).

111109-155558: Spin Networks (4).

111109-153600: Spin Networks (3).

111109-153017: Spin Networks (2).

111109-152332: Spin Networks.