Pith Number

pith:U3OWXNZO

pith:2018:U3OWXNZOEEXVELJD6FRRYNM7PC

not attested not anchored not stored refs pending

The cylinder of a relation and generalized versions of the Nerve Theorem

Elias Gabriel Minian, Ximena Fern\'andez

arxiv:1801.07235 v1 · 2018-01-22 · math.AT · 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{U3OWXNZOEEXVELJD6FRRYNM7PC}

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	2026-05-18T00:25:21.844490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6dd6bb72e212f522d23f1631c359f78ac3452d4430fe2bbf2887b906846f2e8

Aliases

arxiv: 1801.07235 · arxiv_version: 1801.07235v1 · doi: 10.48550/arxiv.1801.07235 · pith_short_12: U3OWXNZOEEXV · pith_short_16: U3OWXNZOEEXVELJD · pith_short_8: U3OWXNZO

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/U3OWXNZOEEXVELJD6FRRYNM7PC \
  | 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: a6dd6bb72e212f522d23f1631c359f78ac3452d4430fe2bbf2887b906846f2e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71362dda7d9fdfbfe01d403884d37e02c326c13413775223367575e9ad7b9a72",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-01-22T18:34:44Z",
    "title_canon_sha256": "6926da9b06d5b11f5ef7df61ea3afdaa74854074f9a91e8f0c11d2d8ca506c64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07235",
    "kind": "arxiv",
    "version": 1
  }
}