Pith Number

pith:UMSQBLMM

pith:2021:UMSQBLMMDD2RNHFCK4CTDYQUEF

not attested not anchored not stored refs pending

From loom spaces to veering triangulations

Henry Segerman, Saul Schleimer

arxiv:2108.10264 v3 · 2021-08-23 · math.GT · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UMSQBLMMDD2RNHFCK4CTDYQUEF}

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.

Cited by

1 paper in Pith

Heegaard Floer theory and pseudo-Anosov flows I: Generators and categorification of the zeta function

Receipt and verification

First computed	2026-07-05T05:45:16.710120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a32500ad8c18f5169ca2570531e214217d30f91ac41edc247bbd6aa598ea683d

Aliases

arxiv: 2108.10264 · arxiv_version: 2108.10264v3 · doi: 10.48550/arxiv.2108.10264 · pith_short_12: UMSQBLMMDD2R · pith_short_16: UMSQBLMMDD2RNHFC · pith_short_8: UMSQBLMM

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/UMSQBLMMDD2RNHFCK4CTDYQUEF \
  | 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: a32500ad8c18f5169ca2570531e214217d30f91ac41edc247bbd6aa598ea683d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "602b18c4ee9f7a02ce74f0ec8fceaf2b78c635d9e22440b8c97b762470d06e6f",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2021-08-23T16:04:18Z",
    "title_canon_sha256": "0427f42b79dcb69461acbe7e39a3f5e31e3b767ea138e85b70f5d7d88fdee913"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.10264",
    "kind": "arxiv",
    "version": 3
  }
}