Pith Number

pith:6E6YPPO6

pith:2013:6E6YPPO6QZYWOIAZWOLIBLZOAL

not attested not anchored not stored refs pending

Twistor Topology of the Fermat Cubic

John Armstrong, Simon Salamon

arxiv:1310.7150 v2 · 2013-10-26 · math.DG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6E6YPPO6QZYWOIAZWOLIBLZOAL}

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	2026-05-18T02:50:22.848610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f13d87bdde8671672019b39680af2e02d294fffb434b1cdcad2832c0216b56f3

Aliases

arxiv: 1310.7150 · arxiv_version: 1310.7150v2 · doi: 10.48550/arxiv.1310.7150 · pith_short_12: 6E6YPPO6QZYW · pith_short_16: 6E6YPPO6QZYWOIAZ · pith_short_8: 6E6YPPO6

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/6E6YPPO6QZYWOIAZWOLIBLZOAL \
  | 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: f13d87bdde8671672019b39680af2e02d294fffb434b1cdcad2832c0216b56f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da2774d1d99f7fdd7556f9afa825b64b74c63bac047cf049a00d99ac9f67cfc3",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-10-26T22:10:40Z",
    "title_canon_sha256": "c8af00918b4e1e5cd58a89d2a33771e50408bf2d06b7dc7eda53c6d76e4ae71f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7150",
    "kind": "arxiv",
    "version": 2
  }
}