Pith Number

pith:4TFWB3H5

pith:2017:4TFWB3H5MARCP75D2H4XEQK46C

not attested not anchored not stored refs pending

Cofinal Extensions and Coded Sets

James H. Schmerl

arxiv:1708.00899 v1 · 2017-08-02 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4TFWB3H5MARCP75D2H4XEQK46C}

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	2026-05-18T00:38:41.205199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4cb60ecfd602227ffa3d1f972415cf090448b46d2a3e1537f4b669b0346f86e

Aliases

arxiv: 1708.00899 · arxiv_version: 1708.00899v1 · doi: 10.48550/arxiv.1708.00899 · pith_short_12: 4TFWB3H5MARC · pith_short_16: 4TFWB3H5MARCP75D · pith_short_8: 4TFWB3H5

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/4TFWB3H5MARCP75D2H4XEQK46C \
  | 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: e4cb60ecfd602227ffa3d1f972415cf090448b46d2a3e1537f4b669b0346f86e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e2638a7a910973ed6f20654a2c6f210b5af8daaa3fb0aa44da5f7d25bcbff1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-08-02T19:10:21Z",
    "title_canon_sha256": "c72fd23e1a9ffc59dd2c6d17802feb5be6fd4b498f6175c25ec06543c7c5be75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.00899",
    "kind": "arxiv",
    "version": 1
  }
}