Pith Number

pith:7GYHCXY7

pith:2017:7GYHCXY7EI6FQRYF3G7EHCSMK4

not attested not anchored not stored refs pending

Mori Dream Spaces and Blow-Ups

Ana-Maria Castravet

arxiv:1701.04738 v1 · 2017-01-17 · 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{7GYHCXY7EI6FQRYF3G7EHCSMK4}

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	2026-05-18T00:52:42.770160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9b0715f1f223c584705d9be438a4c572bc03a511ebbd939106cdd25a3b332f2

Aliases

arxiv: 1701.04738 · arxiv_version: 1701.04738v1 · doi: 10.48550/arxiv.1701.04738 · pith_short_12: 7GYHCXY7EI6F · pith_short_16: 7GYHCXY7EI6FQRYF · pith_short_8: 7GYHCXY7

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/7GYHCXY7EI6FQRYF3G7EHCSMK4 \
  | 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: f9b0715f1f223c584705d9be438a4c572bc03a511ebbd939106cdd25a3b332f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b42fc9bdf4aff2166c8ce7842837b2c16bb1205b0b0eab9452571dd5dfff712",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-01-17T15:54:32Z",
    "title_canon_sha256": "6197ff7a1357e670fd3fde500526542d8d576ffa8929fee239fdf47e83cc3fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.04738",
    "kind": "arxiv",
    "version": 1
  }
}