Pith Number

pith:MQF5YLJB

pith:2005:MQF5YLJBOXGK43J42RTUVUKGGD

not attested not anchored not stored refs pending

Hilbert's 14th Problem and Cox Rings

Ana-Maria Castravet, Jenia Tevelev

arxiv:math/0505337 v2 · 2005-05-16 · 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{MQF5YLJBOXGK43J42RTUVUKGGD}

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	2026-05-18T03:05:55.568502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

640bdc2d2175ccae6d3cd4674ad14630db8e4dd54b10c4d613e3102e413428d2

Aliases

arxiv: math/0505337 · arxiv_version: math/0505337v2 · doi: 10.48550/arxiv.math/0505337 · pith_short_12: MQF5YLJBOXGK · pith_short_16: MQF5YLJBOXGK43J4 · pith_short_8: MQF5YLJB

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/MQF5YLJBOXGK43J42RTUVUKGGD \
  | 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: 640bdc2d2175ccae6d3cd4674ad14630db8e4dd54b10c4d613e3102e413428d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2aa964b5b596d979a27ecfe272236f70bf67493a88fbc3e4038c30a40eb92485",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2005-05-16T18:17:02Z",
    "title_canon_sha256": "d9c655fa96dce9eb98679cab3fdf26a028d0e40f638ffed8bd406403b0dbe1e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0505337",
    "kind": "arxiv",
    "version": 2
  }
}