Pith Number

pith:SCYCNP2R

pith:2015:SCYCNP2RWSM6PXBOB7H7C6HXVM

not attested not anchored not stored refs pending

Brown categories and bicategories

Geoffroy Horel

arxiv:1506.02851 v2 · 2015-06-09 · math.AT · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SCYCNP2RWSM6PXBOB7H7C6HXVM}

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	2026-05-18T01:21:13.298156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90b026bf51b499e7dc2e0fcff178f7ab11d93f03de7b1afa498c2301b7c6d423

Aliases

arxiv: 1506.02851 · arxiv_version: 1506.02851v2 · doi: 10.48550/arxiv.1506.02851 · pith_short_12: SCYCNP2RWSM6 · pith_short_16: SCYCNP2RWSM6PXBO · pith_short_8: SCYCNP2R

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/SCYCNP2RWSM6PXBOB7H7C6HXVM \
  | 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: 90b026bf51b499e7dc2e0fcff178f7ab11d93f03de7b1afa498c2301b7c6d423

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "577caa171902b7d307e5c9af7387258d9516351ebbb93b7189287a7208484cae",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-06-09T10:26:07Z",
    "title_canon_sha256": "85f6a57bea891db5db9e1201a82d8becf1105b30ef698503bee87c0099a7a403"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.02851",
    "kind": "arxiv",
    "version": 2
  }
}