Pith Number

pith:VQSSQP5P

pith:2009:VQSSQP5PVMZG5AKCJLD64MMDIS

not attested not anchored not stored refs pending

Tilting on non-commutative rational projective curves

Igor Burban, Yuriy Drozd

arxiv:0905.1231 v5 · 2009-05-08 · math.AG · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQSSQP5PVMZG5AKCJLD64MMDIS}

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	2026-05-18T04:04:07.103133Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac25283fafab326e81424ac7ee318344a1a1846558b69f507f21b58ea75fcfb7

Aliases

arxiv: 0905.1231 · arxiv_version: 0905.1231v5 · doi: 10.48550/arxiv.0905.1231 · pith_short_12: VQSSQP5PVMZG · pith_short_16: VQSSQP5PVMZG5AKC · pith_short_8: VQSSQP5P

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/VQSSQP5PVMZG5AKCJLD64MMDIS \
  | 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: ac25283fafab326e81424ac7ee318344a1a1846558b69f507f21b58ea75fcfb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a68111883a1cbfc942df9948021698ee5bf56b1d1573620b5e4f7185db997e79",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-05-08T13:37:11Z",
    "title_canon_sha256": "7f49f3496c3eaac8d69182519ee5c31b1e9d1c015e146978564735df185ec613"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1231",
    "kind": "arxiv",
    "version": 5
  }
}