Pith Number

pith:UPJZNH3H

pith:2025:UPJZNH3HYHNPYNWNP4VRPQ5ATE

not attested not anchored not stored refs pending

A Sm\"org\aa sbord of (bi)contact structures, Reeb flows and pseudo-Anosov flows

Thomas Barthelm\'e

arxiv:2502.07716 v1 · 2025-02-11 · math.DS · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPJZNH3HYHNPYNWNP4VRPQ5ATE}

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	2026-07-05T10:12:52.937584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3d3969f67c1dafc36cd7f2b17c3a09938a564ee9f2b63dd82ff36199d5e5201

Aliases

arxiv: 2502.07716 · arxiv_version: 2502.07716v1 · doi: 10.48550/arxiv.2502.07716 · pith_short_12: UPJZNH3HYHNP · pith_short_16: UPJZNH3HYHNPYNWN · pith_short_8: UPJZNH3H

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/UPJZNH3HYHNPYNWNP4VRPQ5ATE \
  | 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: a3d3969f67c1dafc36cd7f2b17c3a09938a564ee9f2b63dd82ff36199d5e5201

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21fd05b6d0ad86e7f377df033e9fcf03980e6a41d6fd9ffc3cef5a6cadd3db35",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2025-02-11T17:17:43Z",
    "title_canon_sha256": "f0301f453b28f9397b8767612e0bf68f5a8cfbf91468e729c850f6c448cd6876"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.07716",
    "kind": "arxiv",
    "version": 1
  }
}