Pith Number

pith:HY4FOPPR

pith:2018:HY4FOPPRH5SGAQ27LGLCOD6GRE

not attested not anchored not stored refs pending

Barcodes for closed one form - an alternative to Novikov theory

Dan Burghelea

arxiv:1806.00515 v1 · 2018-06-01 · 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{HY4FOPPRH5SGAQ27LGLCOD6GRE}

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	2026-05-18T00:14:21.004605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e38573df13f6460435f5996270fc68928d6fc4b7b7ecd45c5542d20a9f712bf

Aliases

arxiv: 1806.00515 · arxiv_version: 1806.00515v1 · doi: 10.48550/arxiv.1806.00515 · pith_short_12: HY4FOPPRH5SG · pith_short_16: HY4FOPPRH5SGAQ27 · pith_short_8: HY4FOPPR

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/HY4FOPPRH5SGAQ27LGLCOD6GRE \
  | 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: 3e38573df13f6460435f5996270fc68928d6fc4b7b7ecd45c5542d20a9f712bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "946541660d4acf221741eeb94960ba1e81fb36ede3980e61289e77320243bb9d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-06-01T19:14:30Z",
    "title_canon_sha256": "e5b30f524ede9748dbd477345d0817b9022bd37790d5342b28ba0bc8e8e9cda1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.00515",
    "kind": "arxiv",
    "version": 1
  }
}