Pith Number

pith:RC6QEBH2

pith:2012:RC6QEBH2F6O475PCTMTTRVXHND

not attested not anchored not stored refs pending

Visualizing Poincar\'e Duality

Lucien Clavier

arxiv:1201.5150 v1 · 2012-01-24 · 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{RC6QEBH2F6O475PCTMTTRVXHND}

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	2026-05-18T04:03:55.477524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88bd0204fa2f9dcff5e29b2738d6e768d47f3c988d64d5a57312a9b9d93eff1f

Aliases

arxiv: 1201.5150 · arxiv_version: 1201.5150v1 · doi: 10.48550/arxiv.1201.5150 · pith_short_12: RC6QEBH2F6O4 · pith_short_16: RC6QEBH2F6O475PC · pith_short_8: RC6QEBH2

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/RC6QEBH2F6O475PCTMTTRVXHND \
  | 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: 88bd0204fa2f9dcff5e29b2738d6e768d47f3c988d64d5a57312a9b9d93eff1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc46b95775e238c13487c0295d5f2dd91d9baed29c297787d066559cf1318411",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-01-24T22:50:54Z",
    "title_canon_sha256": "d2e7839cb6cd50670348d1c9eaf44a0e1132dd376fed89f27c27f25d1ca6c2f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5150",
    "kind": "arxiv",
    "version": 1
  }
}