Pith Number

pith:HEBBCZSN

pith:1998:HEBBCZSNASA6OIN7MC3XSNY4MX

not attested not anchored not stored refs pending

Signature via Novikov numbers

Michael Farber

arxiv:math/9810020 v1 · 1998-10-05 · math.SG · math.AT · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HEBBCZSNASA6OIN7MC3XSNY4MX}

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	2026-05-18T01:38:22.760003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

390211664d0481e721bf60b779371c65e41859a992d78dee739ef5c4e4f585bf

Aliases

arxiv: math/9810020 · arxiv_version: math/9810020v1 · doi: 10.48550/arxiv.math/9810020 · pith_short_12: HEBBCZSNASA6 · pith_short_16: HEBBCZSNASA6OIN7 · pith_short_8: HEBBCZSN

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/HEBBCZSNASA6OIN7MC3XSNY4MX \
  | 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: 390211664d0481e721bf60b779371c65e41859a992d78dee739ef5c4e4f585bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ace1acfc4f4d7b07f1d23ccbb8b93520e33c2fb76ca302e8c774152902aa4816",
    "cross_cats_sorted": [
      "math.AT",
      "math.DG"
    ],
    "license": "",
    "primary_cat": "math.SG",
    "submitted_at": "1998-10-05T13:46:45Z",
    "title_canon_sha256": "a1af007ceef0d38e07d8169ccc175ac9a6fde30e726877f9346f791f882c9001"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9810020",
    "kind": "arxiv",
    "version": 1
  }
}