Pith Number

pith:7LGPH3U5

pith:2017:7LGPH3U532YG4VPG52TPJV5DRY

not attested not anchored not stored refs pending

On avoidability of formulas with reversal

James Daniel Currie, Lucas Mol, Narad Rampersad

arxiv:1703.10522 v1 · 2017-03-30 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7LGPH3U532YG4VPG52TPJV5DRY}

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	2026-05-18T00:23:45.831582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

faccf3ee9ddeb06e55e6eea6f4d7a38e3db4022e3fa31836af9730f14e0a5ac4

Aliases

arxiv: 1703.10522 · arxiv_version: 1703.10522v1 · doi: 10.48550/arxiv.1703.10522 · pith_short_12: 7LGPH3U532YG · pith_short_16: 7LGPH3U532YG4VPG · pith_short_8: 7LGPH3U5

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/7LGPH3U532YG4VPG52TPJV5DRY \
  | 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: faccf3ee9ddeb06e55e6eea6f4d7a38e3db4022e3fa31836af9730f14e0a5ac4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edc126778de71b57452c3eb4561da76774343409a3d5b073f323e055e65be985",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-03-30T15:23:06Z",
    "title_canon_sha256": "d2e329fdd024f42e2812654e5794367e5b44e2e0bfee1c29d1d416e191cb5513"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.10522",
    "kind": "arxiv",
    "version": 1
  }
}