Pith Number

pith:5CCEYSYD

pith:2015:5CCEYSYD54LMU3SXKVT6W2PNDX

not attested not anchored not stored refs pending

On the effective cone of $\mathbb{P}^n$ blown-up at $n+3$ points

Elisa Postinghel, Maria Chiara Brambilla, Olivia Dumitrescu

arxiv:1501.04094 v2 · 2015-01-16 · math.AG · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5CCEYSYD54LMU3SXKVT6W2PNDX}

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	2026-05-18T01:31:30.013920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8844c4b03ef16ca6e575567eb69ed1dc628bb4855a33a3c5b517288bfecdcf0

Aliases

arxiv: 1501.04094 · arxiv_version: 1501.04094v2 · doi: 10.48550/arxiv.1501.04094 · pith_short_12: 5CCEYSYD54LM · pith_short_16: 5CCEYSYD54LMU3SX · pith_short_8: 5CCEYSYD

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/5CCEYSYD54LMU3SXKVT6W2PNDX \
  | 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: e8844c4b03ef16ca6e575567eb69ed1dc628bb4855a33a3c5b517288bfecdcf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "404b67c9d1ec6a5873bf677755dc5929d53ee747c651dbac87f50f581fb2ecc3",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-01-16T20:45:50Z",
    "title_canon_sha256": "e3f1ddede469e12ca80bce485c52a7fdc18ed53e7b431f6a72a9c2c00717c0ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04094",
    "kind": "arxiv",
    "version": 2
  }
}