Pith Number

pith:66QIZXUL

pith:2012:66QIZXULK5AN6A5NKC5VSCXO53

not attested not anchored not stored refs pending

Metric Problems for Quadrics in Multidimensional Space

Alexei Yu. Uteshev, Marina V. Yashina

arxiv:1207.2243 v1 · 2012-07-10 · cs.SC · 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{66QIZXULK5AN6A5NKC5VSCXO53}

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	2026-05-18T03:51:24.640036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7a08cde8b5740df03ad50bb590aeeeee8dce93c21a8e8ad675c575c66e89547

Aliases

arxiv: 1207.2243 · arxiv_version: 1207.2243v1 · doi: 10.48550/arxiv.1207.2243 · pith_short_12: 66QIZXULK5AN · pith_short_16: 66QIZXULK5AN6A5N · pith_short_8: 66QIZXUL

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/66QIZXULK5AN6A5NKC5VSCXO53 \
  | 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: f7a08cde8b5740df03ad50bb590aeeeee8dce93c21a8e8ad675c575c66e89547

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b423ec75b7dd5eb1af4006fc3b73df52ab58c166ed4d84bd673b1e202608e6c",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2012-07-10T07:03:36Z",
    "title_canon_sha256": "99599e937d78a85016ab0f591d75c5a9e779022e1f1f9a2ffc918cc3f6c74311"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2243",
    "kind": "arxiv",
    "version": 1
  }
}