Pith Number

pith:BTNVGUS2

pith:2026:BTNVGUS2QBBSLQZ7ALHY7R74WL

not attested not anchored not stored refs pending

Towards fast computation of higher discrete homology

Chris Kapulkin, Jacob Ender

arxiv:2606.00245 v1 · 2026-05-29 · cs.CG · 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{BTNVGUS2QBBSLQZ7ALHY7R74WL}

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	2026-06-02T01:03:22.635514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cdb53525a804325c33f02cf8fc7fcb2eef48abff442e2f5977fec7ec9ab36f0

Aliases

arxiv: 2606.00245 · arxiv_version: 2606.00245v1 · doi: 10.48550/arxiv.2606.00245 · pith_short_12: BTNVGUS2QBBS · pith_short_16: BTNVGUS2QBBSLQZ7 · pith_short_8: BTNVGUS2

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/BTNVGUS2QBBSLQZ7ALHY7R74WL \
  | 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: 0cdb53525a804325c33f02cf8fc7fcb2eef48abff442e2f5977fec7ec9ab36f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19037b9ad2f8ca48d5237ee73b4fa6c5abd25f687ea56adaa23b81738d88c36e",
    "cross_cats_sorted": [
      "math.AT",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2026-05-29T18:22:44Z",
    "title_canon_sha256": "86466dbf0aec2f6d7f8d42419a49eea36eb8a809ba75018466b8425477d6639a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.00245",
    "kind": "arxiv",
    "version": 1
  }
}