Pith Number

pith:3NMETTYI

pith:2015:3NMETTYIOOABZ46C44Y6U23XLU

not attested not anchored not stored refs pending

Remarks on pointed digital homotopy

Laurence Boxer, P. Christopher Staecker

arxiv:1503.03016 v2 · 2015-03-10 · math.CO · cs.CV · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3NMETTYIOOABZ46C44Y6U23XLU}

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	2026-05-18T01:57:23.448382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db5849cf0873801cf3c2e731ea6b775d220e78900f4883b2a1086c92cb7e6c00

Aliases

arxiv: 1503.03016 · arxiv_version: 1503.03016v2 · doi: 10.48550/arxiv.1503.03016 · pith_short_12: 3NMETTYIOOAB · pith_short_16: 3NMETTYIOOABZ46C · pith_short_8: 3NMETTYI

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/3NMETTYIOOABZ46C44Y6U23XLU \
  | 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: db5849cf0873801cf3c2e731ea6b775d220e78900f4883b2a1086c92cb7e6c00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e6bcbd5b23451d1caf2a4b3f2edd33349fefff313a55c61605ef9d8d716c7dd",
    "cross_cats_sorted": [
      "cs.CV",
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-03-10T17:52:28Z",
    "title_canon_sha256": "60c34afe92ecc7fa413d2324cdb462f4fd8b10f42e0fb7b1878fe1fa6f8e1260"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03016",
    "kind": "arxiv",
    "version": 2
  }
}