Pith Number

pith:POTIDOS6

pith:2018:POTIDOS6BYQ5QARN7VOZP2FWTM

not attested not anchored not stored refs pending

Involution surface bundles over surfaces

Andrew Kresch, Yuri Tschinkel

arxiv:1807.01592 v1 · 2018-07-04 · 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{POTIDOS6BYQ5QARN7VOZP2FWTM}

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	2026-05-18T00:11:29.382486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ba681ba5e0e21d8022dfd5d97e8b69b0cf62af742963521254b429b83371d60

Aliases

arxiv: 1807.01592 · arxiv_version: 1807.01592v1 · doi: 10.48550/arxiv.1807.01592 · pith_short_12: POTIDOS6BYQ5 · pith_short_16: POTIDOS6BYQ5QARN · pith_short_8: POTIDOS6

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/POTIDOS6BYQ5QARN7VOZP2FWTM \
  | 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: 7ba681ba5e0e21d8022dfd5d97e8b69b0cf62af742963521254b429b83371d60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "075cbd5c9ade11532d222955ae300dc2c8f356f666a7b97ba3f2b636b99d46b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-07-04T14:01:09Z",
    "title_canon_sha256": "946c944151f31d8a1db6fd2fb9024870c46a9f472576370d491f8aa12280f702"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01592",
    "kind": "arxiv",
    "version": 1
  }
}