Pith Number

pith:434CDPNC

pith:2018:434CDPNCFKNGROCTBNFZUJI6RB

not attested not anchored not stored refs pending

Erdos-Moser and ISigma_2

Henry Towsner, Keita Yokoyama

arxiv:1807.04452 v1 · 2018-07-12 · 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{434CDPNCFKNGROCTBNFZUJI6RB}

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	2026-05-18T00:10:53.461540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6f821bda22a9a68b8530b4b9a251e88458b038856cdf4b8e0b88518873cf888

Aliases

arxiv: 1807.04452 · arxiv_version: 1807.04452v1 · doi: 10.48550/arxiv.1807.04452 · pith_short_12: 434CDPNCFKNG · pith_short_16: 434CDPNCFKNGROCT · pith_short_8: 434CDPNC

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/434CDPNCFKNGROCTBNFZUJI6RB \
  | 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: e6f821bda22a9a68b8530b4b9a251e88458b038856cdf4b8e0b88518873cf888

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5c57fdcec53bedeec35ff2b3e27d401cb381e0168ffeddcae9005f75e3b3f01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-07-12T07:47:55Z",
    "title_canon_sha256": "d333d4ae1b33ea682126f1443bfba179621166293ef7adf649ef87b0e0395ba8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04452",
    "kind": "arxiv",
    "version": 1
  }
}