Pith Number

pith:XXDNDNU3

pith:2012:XXDNDNU36GR4NJS5KM27LWEWSC

not attested not anchored not stored refs pending

Cups Products in Z2-Cohomology of 3D Polyhedral Complexes

Javier Lamar, Rocio Gonalez-Diaz, Ronald Umble

arxiv:1207.2346 v3 · 2012-07-10 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XXDNDNU36GR4NJS5KM27LWEWSC}

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	2026-05-18T03:18:51.820418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdc6d1b69bf1a3c6a65d5335f5d89690aa2921c4568cb9068e687fc2a6a08456

Aliases

arxiv: 1207.2346 · arxiv_version: 1207.2346v3 · doi: 10.48550/arxiv.1207.2346 · pith_short_12: XXDNDNU36GR4 · pith_short_16: XXDNDNU36GR4NJS5 · pith_short_8: XXDNDNU3

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/XXDNDNU36GR4NJS5KM27LWEWSC \
  | 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: bdc6d1b69bf1a3c6a65d5335f5d89690aa2921c4568cb9068e687fc2a6a08456

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a1769e82b699cc01c3c6f25d9005df23120b51d820eef6a963030e8150d005e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-07-10T13:40:40Z",
    "title_canon_sha256": "ab22318a2e164912d90bc73557664ce7ad7e544b0d3a58bd059caa38cfd4ce7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2346",
    "kind": "arxiv",
    "version": 3
  }
}