Pith Number

pith:JMT2QAH6

pith:2016:JMT2QAH6NIP72YYGSQS3I4JBG5

not attested not anchored not stored refs pending

Avoidability of formulas with two variables

Matthieu Rosenfeld, Pascal Ochem

arxiv:1606.03955 v2 · 2016-06-13 · cs.DM · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JMT2QAH6NIP72YYGSQS3I4JBG5}

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	2026-05-18T01:02:23.579908Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b27a800fe6a1ffd63069425b471213750feccffee5d1bdcb34a1b9218361124

Aliases

arxiv: 1606.03955 · arxiv_version: 1606.03955v2 · doi: 10.48550/arxiv.1606.03955 · pith_short_12: JMT2QAH6NIP7 · pith_short_16: JMT2QAH6NIP72YYG · pith_short_8: JMT2QAH6

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/JMT2QAH6NIP72YYGSQS3I4JBG5 \
  | 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: 4b27a800fe6a1ffd63069425b471213750feccffee5d1bdcb34a1b9218361124

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bedf6e706ab9649d1ab2f047fff20fef07ad69ba4fe277acc867fb9cbf60696",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2016-06-13T14:02:58Z",
    "title_canon_sha256": "724c7df58125d19c449344f947d2d8e51a3e5e9c6d10c04ec0e785eff7169b4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.03955",
    "kind": "arxiv",
    "version": 2
  }
}