Pith Number

pith:63VFPPKB

pith:2018:63VFPPKBFR6SEDXFMPBQX6HUZD

not attested not anchored not stored refs pending

The Generalized Persistent Nerve Theorem

Donald R. Sheehy, Nicholas J. Cavanna

arxiv:1807.07920 v1 · 2018-07-20 · math.AT · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63VFPPKBFR6SEDXFMPBQX6HUZD}

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	2026-05-18T00:10:15.294623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6ea57bd412c7d220ee563c30bf8f4c8eb3eae31dec0f1ce256b5982ca0d7394

Aliases

arxiv: 1807.07920 · arxiv_version: 1807.07920v1 · doi: 10.48550/arxiv.1807.07920 · pith_short_12: 63VFPPKBFR6S · pith_short_16: 63VFPPKBFR6SEDXF · pith_short_8: 63VFPPKB

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/63VFPPKBFR6SEDXFMPBQX6HUZD \
  | 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: f6ea57bd412c7d220ee563c30bf8f4c8eb3eae31dec0f1ce256b5982ca0d7394

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4fcb185fe7a65d34b4712f8cf2f82a7217249f4ddcf4f458b49d7b65710ce5f",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-07-20T16:25:52Z",
    "title_canon_sha256": "ff2595c5cc1582a72bb2c88bcbd25f701e197c2c72d74507bb377d1c00ae647b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07920",
    "kind": "arxiv",
    "version": 1
  }
}