Pith Number

pith:35YCCPEC

pith:2006:35YCCPECRFQDPHYO6A65VUHXKH

not attested not anchored not stored refs pending

A class of noncommutative projective surfaces

D. Rogalski, J. T. Stafford

arxiv:math/0612657 v1 · 2006-12-21 · math.RA · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{35YCCPECRFQDPHYO6A65VUHXKH}

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	2026-05-18T02:57:45.345409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df70213c828960379f0ef03ddad0f751deed5e322c631a9a842418ccd8a0ae02

Aliases

arxiv: math/0612657 · arxiv_version: math/0612657v1 · doi: 10.48550/arxiv.math/0612657 · pith_short_12: 35YCCPECRFQD · pith_short_16: 35YCCPECRFQDPHYO · pith_short_8: 35YCCPEC

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/35YCCPECRFQDPHYO6A65VUHXKH \
  | 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: df70213c828960379f0ef03ddad0f751deed5e322c631a9a842418ccd8a0ae02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2abf8523c29d92ea624a4f00e5362ebab1a978cf025e6e194eee66b1bf492198",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.RA",
    "submitted_at": "2006-12-21T17:50:50Z",
    "title_canon_sha256": "b1c9f5998de8a9343b3b174cbeac8b1b431dc6e6c82de21037fa1736e696eb32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0612657",
    "kind": "arxiv",
    "version": 1
  }
}