Pith Number

pith:UQZ4Q3S3

pith:2010:UQZ4Q3S3U2WFMWK2FFMOBH2MHY

not attested not anchored not stored refs pending

On Invariant Notions of Segre Varieties in Binary Projective Spaces

Boris Odehnal (TUW), Hans Havlicek (TUW), Metod Saniga (ASTRINSTSAV)

arxiv:1006.4492 v2 · 2010-06-23 · math.AG · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UQZ4Q3S3U2WFMWK2FFMOBH2MHY}

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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	2026-05-18T04:02:25.340575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a433c86e5ba6ac56595a2958e09f4c3e36b5bf88d7d62d9683d3f0050a75eaf8

Aliases

arxiv: 1006.4492 · arxiv_version: 1006.4492v2 · doi: 10.48550/arxiv.1006.4492 · pith_short_12: UQZ4Q3S3U2WF · pith_short_16: UQZ4Q3S3U2WFMWK2 · pith_short_8: UQZ4Q3S3

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/UQZ4Q3S3U2WFMWK2FFMOBH2MHY \
  | 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: a433c86e5ba6ac56595a2958e09f4c3e36b5bf88d7d62d9683d3f0050a75eaf8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a7cf5cdebcac2553b3a439a5acfc2f3e072e3b8220177ac0731ed7e1dca3fde",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2010-06-23T12:00:10Z",
    "title_canon_sha256": "040b17ea1623e06759f51d5a1572ea905f1aebd90215cf79863d897302a02e23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.4492",
    "kind": "arxiv",
    "version": 2
  }
}