Pith Number

pith:6JLFLRAL

pith:2015:6JLFLRAL5LZ72TZVIIBKRYNZ3M

not attested not anchored not stored refs pending

Integration on the Surreals: a Conjecture of Conway, Kruskal and Norton

Harvey M. Friedman, Ovidiu Costin, Philip Ehrlich

arxiv:1505.02478 v3 · 2015-05-11 · 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{6JLFLRAL5LZ72TZVIIBKRYNZ3M}

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	2026-05-18T01:34:49.791137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f25655c40beaf3fd4f354202a8e1b9db17959956cc3674c1eb9a31ae45578006

Aliases

arxiv: 1505.02478 · arxiv_version: 1505.02478v3 · doi: 10.48550/arxiv.1505.02478 · pith_short_12: 6JLFLRAL5LZ7 · pith_short_16: 6JLFLRAL5LZ72TZV · pith_short_8: 6JLFLRAL

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/6JLFLRAL5LZ72TZVIIBKRYNZ3M \
  | 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: f25655c40beaf3fd4f354202a8e1b9db17959956cc3674c1eb9a31ae45578006

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36fa96491537b9ce0be2feab5e66a76998f8e07e06dce5da5a74bf07617e8370",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-05-11T03:57:02Z",
    "title_canon_sha256": "9b8cb8b7fe0025c8fd7dd46540bfc6f82001d36b4d4bd61175f5bb7dbf9b0dea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02478",
    "kind": "arxiv",
    "version": 3
  }
}