Pith Number

pith:E6UT37RZ

pith:2011:E6UT37RZAUWBBONUVDN2EPEO7Y

not attested not anchored not stored refs pending

Complexity and Algorithms for Euler Characteristic of Simplicial Complexes

Bjarke Hammersholt Roune, Eduardo S\'aenz de Cabez\'on

arxiv:1112.4523 v1 · 2011-12-19 · cs.CG · cs.CC · cs.DS · cs.MS · cs.SC · math.AC · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E6UT37RZAUWBBONUVDN2EPEO7Y}

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	2026-05-18T04:05:58.656545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27a93dfe39052c10b9b4a8dba23c8efe25bf32ef80be8c40313eab91a240b2a2

Aliases

arxiv: 1112.4523 · arxiv_version: 1112.4523v1 · doi: 10.48550/arxiv.1112.4523 · pith_short_12: E6UT37RZAUWB · pith_short_16: E6UT37RZAUWBBONU · pith_short_8: E6UT37RZ

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/E6UT37RZAUWBBONUVDN2EPEO7Y \
  | 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: 27a93dfe39052c10b9b4a8dba23c8efe25bf32ef80be8c40313eab91a240b2a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2077a42c4d0a961ed966dfd2726c824ab5605737002afe4e9210d44e0aea5893",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS",
      "cs.MS",
      "cs.SC",
      "math.AC",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2011-12-19T22:51:21Z",
    "title_canon_sha256": "d0f20c71d7ac6ed702ee2445c8f434725d49a6accff85dccc71f34b03b11ad37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4523",
    "kind": "arxiv",
    "version": 1
  }
}