Pith Number

pith:XY6LDZSS

pith:2009:XY6LDZSSEN2APNLSWSJKZSW4SJ

not attested not anchored not stored refs pending

Khovanov homology, sutured Floer homology, and annular links

J. Elisenda Grigsby, Stephan M. Wehrli

arxiv:0907.4375 v2 · 2009-07-27 · math.GT · math.QA · math.SG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XY6LDZSSEN2APNLSWSJKZSW4SJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:30:12.876789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be3cb1e652237407b572b492accadc9270a53bbfb1c98cb5cfbce3ff4a0bfd83

Aliases

arxiv: 0907.4375 · arxiv_version: 0907.4375v2 · doi: 10.48550/arxiv.0907.4375 · pith_short_12: XY6LDZSSEN2A · pith_short_16: XY6LDZSSEN2APNLS · pith_short_8: XY6LDZSS

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XY6LDZSSEN2APNLSWSJKZSW4SJ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: be3cb1e652237407b572b492accadc9270a53bbfb1c98cb5cfbce3ff4a0bfd83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a4a244829a83591f5b7cf66f18d7a5decaee00d1a5fe45ae038aaa42a6a1bde",
    "cross_cats_sorted": [
      "math.QA",
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2009-07-27T14:56:05Z",
    "title_canon_sha256": "e1ccc487a74d0155df3e563a63bbaa19299c33adcbaa8c65193b4788f89816cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4375",
    "kind": "arxiv",
    "version": 2
  }
}