Pith Number

pith:PXRKQ6Y5

pith:2012:PXRKQ6Y5J64L7TCJFAUBMEXA6L

not attested not anchored not stored refs pending

Experimental determination of Ramsey numbers

Fabian Chudak, Frank Gaitan, Lane Clark, William G. Macready, Zhengbing Bian

arxiv:1201.1842 v3 · 2012-01-09 · quant-ph · cond-mat.mes-hall · hep-th · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PXRKQ6Y5J64L7TCJFAUBMEXA6L}

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	2026-05-18T03:11:22.190013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7de2a87b1d4fb8bfcc4928281612e0f2df0239f246814811de613105d4169ee3

Aliases

arxiv: 1201.1842 · arxiv_version: 1201.1842v3 · doi: 10.48550/arxiv.1201.1842 · pith_short_12: PXRKQ6Y5J64L · pith_short_16: PXRKQ6Y5J64L7TCJ · pith_short_8: PXRKQ6Y5

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/PXRKQ6Y5J64L7TCJFAUBMEXA6L \
  | 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: 7de2a87b1d4fb8bfcc4928281612e0f2df0239f246814811de613105d4169ee3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "474a3859ef64002588c6e2a39a3af1833caa8efe52ff570f9f84e4c0cebe39dd",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-01-09T17:18:48Z",
    "title_canon_sha256": "80b8be9040015a969452a418baa5ca4210d9ba7b348c29160a77709d88c70470"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1842",
    "kind": "arxiv",
    "version": 3
  }
}