Pith Number

pith:7T24VRTA

pith:2019:7T24VRTAF2I4U7PAQ33T2TKLTA

not attested not anchored not stored refs pending

Geometry of compact lifting spaces

Gregory R. Conner, Petar Pave\v{s}i\'c, Wolfgang Herfort

arxiv:1901.02108 v1 · 2019-01-07 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7T24VRTAF2I4U7PAQ33T2TKLTA}

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	2026-05-17T23:56:43.987688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcf5cac6602e91ca7de086f73d4d4b9830bc3ff4ed1d9ed1305efc8a95eb089f

Aliases

arxiv: 1901.02108 · arxiv_version: 1901.02108v1 · doi: 10.48550/arxiv.1901.02108 · pith_short_12: 7T24VRTAF2I4 · pith_short_16: 7T24VRTAF2I4U7PA · pith_short_8: 7T24VRTA

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/7T24VRTAF2I4U7PAQ33T2TKLTA \
  | 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: fcf5cac6602e91ca7de086f73d4d4b9830bc3ff4ed1d9ed1305efc8a95eb089f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29641d604d961f0a3f01df354655429ba4f93fd6d73d6312c968619858cfb25c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-01-07T23:59:12Z",
    "title_canon_sha256": "e16b373a1720dd453536518d8d6b85cb5b549b52688c5b348d376f8761e914ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02108",
    "kind": "arxiv",
    "version": 1
  }
}