Pith Number

pith:XTUDDZ76

pith:2009:XTUDDZ763UGSUITDMOVCIBRMUT

not attested not anchored not stored refs pending

Polynomials constant on a hyperplane and CR maps of hyperquadrics

Han Peters, Jiri Lebl

arxiv:0910.2673 v2 · 2009-10-14 · math.AG · math.CO · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XTUDDZ763UGSUITDMOVCIBRMUT}

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	2026-05-18T04:24:35.306944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bce831e7fedd0d2a226363aa24062ca4fdcb98c41e66208978b3cf10d3ea2f8b

Aliases

arxiv: 0910.2673 · arxiv_version: 0910.2673v2 · doi: 10.48550/arxiv.0910.2673 · pith_short_12: XTUDDZ763UGS · pith_short_16: XTUDDZ763UGSUITD · pith_short_8: XTUDDZ76

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/XTUDDZ763UGSUITDMOVCIBRMUT \
  | 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: bce831e7fedd0d2a226363aa24062ca4fdcb98c41e66208978b3cf10d3ea2f8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74e5b2ce17c4804662750d358d1625f660076503a98de7aad2b3b06759f5c137",
    "cross_cats_sorted": [
      "math.CO",
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-10-14T18:30:25Z",
    "title_canon_sha256": "2542dcf85776fedf274375117fb903dc6d9144e3a17af6bc05ff83b12841aba2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2673",
    "kind": "arxiv",
    "version": 2
  }
}