Pith Number

pith:HC6EXQTT

pith:2013:HC6EXQTTZLELC7RSE2JETQDBHT

not attested not anchored not stored refs pending

$\overline{M}_{0,n}$ is not a Mori Dream Space

Ana-Maria Castravet, Jenia Tevelev

arxiv:1311.7673 v3 · 2013-11-29 · 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{HC6EXQTTZLELC7RSE2JETQDBHT}

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	2026-05-18T00:52:44.601441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38bc4bc273cac8b17e32269249c0613cf5ebd91e240662901cdacce40b7b6093

Aliases

arxiv: 1311.7673 · arxiv_version: 1311.7673v3 · doi: 10.48550/arxiv.1311.7673 · pith_short_12: HC6EXQTTZLEL · pith_short_16: HC6EXQTTZLELC7RS · pith_short_8: HC6EXQTT

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/HC6EXQTTZLELC7RSE2JETQDBHT \
  | 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: 38bc4bc273cac8b17e32269249c0613cf5ebd91e240662901cdacce40b7b6093

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fbcdce545d7b552572563f0511452472e59501807c4dae26a776f251fd60db7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-11-29T19:33:15Z",
    "title_canon_sha256": "56e2e3d9be9518e768a2d82bac58c0bd29732f84988a7765672a0b3c0e165605"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7673",
    "kind": "arxiv",
    "version": 3
  }
}