Pith Number

pith:QFH44L7B

pith:2010:QFH44L7BACYMZJZNOCVDQOPOHN

not attested not anchored not stored refs pending

DB pairs and vanishing theorems

S\'andor J. Kov\'acs

arxiv:1009.3536 v2 · 2010-09-18 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QFH44L7BACYMZJZNOCVDQOPOHN}

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	2026-05-17T23:49:22.951968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814fce2fe100b0cca72d70aa3839ee3b5c584fe80feb301db89be8e653d499be

Aliases

arxiv: 1009.3536 · arxiv_version: 1009.3536v2 · doi: 10.48550/arxiv.1009.3536 · pith_short_12: QFH44L7BACYM · pith_short_16: QFH44L7BACYMZJZN · pith_short_8: QFH44L7B

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/QFH44L7BACYMZJZNOCVDQOPOHN \
  | 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: 814fce2fe100b0cca72d70aa3839ee3b5c584fe80feb301db89be8e653d499be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84cf5bfb1e8f53cc7844398503fb2e2153dd59c639106291f10e1f99727c9f4d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2010-09-18T06:18:29Z",
    "title_canon_sha256": "ad41d111cebbe922c760fee6fe1522a102019ce5d5033d3227c3e63d8e6b7a2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.3536",
    "kind": "arxiv",
    "version": 2
  }
}