Pith Number

pith:N2PHR37O

pith:2015:N2PHR37OX6BAQQXDHHPMBLEAEJ

not attested not anchored not stored refs pending

Commensurability Classes of Fake Quadrics

Benjamin Linowitz, John Voight, Matthew Stover

arxiv:1504.04642 v2 · 2015-04-17 · math.AG · math.GR · math.GT · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N2PHR37OX6BAQQXDHHPMBLEAEJ}

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	2026-05-17T23:44:33.246577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e9e78efeebf820842e339dec0ac8022414b71b678dcd89b7f7fe657c784b140

Aliases

arxiv: 1504.04642 · arxiv_version: 1504.04642v2 · doi: 10.48550/arxiv.1504.04642 · pith_short_12: N2PHR37OX6BA · pith_short_16: N2PHR37OX6BAQQXD · pith_short_8: N2PHR37O

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/N2PHR37OX6BAQQXDHHPMBLEAEJ \
  | 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: 6e9e78efeebf820842e339dec0ac8022414b71b678dcd89b7f7fe657c784b140

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08c61db6fa03b2db6137cdce084570f7cfeeca7813c54eb043713a424879b975",
    "cross_cats_sorted": [
      "math.GR",
      "math.GT",
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-04-17T21:26:26Z",
    "title_canon_sha256": "8350bf2a0e5b5fe5e3e4131ae02d5baf563ec21daf82ca713bae2cdf8f1c4d36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04642",
    "kind": "arxiv",
    "version": 2
  }
}