Pith Number

pith:7OVBH2RJ

pith:2014:7OVBH2RJVQHFNLCAIJNZ3IRMXI

not attested not anchored not stored refs pending

Mad Spectra

Otmar Spinas, Saharon Shelah

arxiv:1402.5616 v1 · 2014-02-23 · 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{7OVBH2RJVQHFNLCAIJNZ3IRMXI}

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	2026-05-18T02:58:14.301333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbaa13ea29ac0e56ac40425b9da22cba176f8d122f3e9c12a4e6a76d22d5ef35

Aliases

arxiv: 1402.5616 · arxiv_version: 1402.5616v1 · doi: 10.48550/arxiv.1402.5616 · pith_short_12: 7OVBH2RJVQHF · pith_short_16: 7OVBH2RJVQHFNLCA · pith_short_8: 7OVBH2RJ

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/7OVBH2RJVQHFNLCAIJNZ3IRMXI \
  | 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: fbaa13ea29ac0e56ac40425b9da22cba176f8d122f3e9c12a4e6a76d22d5ef35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afd70577d72db10a425adaa4ec0b9c989f00823c039c480c0884dc09d59f6b99",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-02-23T15:08:54Z",
    "title_canon_sha256": "ef9b2551e6c86d6b54baa79145ef96a4f2a158c2da09ae5a72922b62465f2b53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.5616",
    "kind": "arxiv",
    "version": 1
  }
}