Pith Number

pith:AFJA47NW

pith:2018:AFJA47NWX77QG53NHUG65E7BHQ

not attested not anchored not stored refs pending

A note on a question of Dimca and Greuel

Guillem Blanco, Patricio Almir\'on

arxiv:1807.05967 v2 · 2018-07-16 · 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{AFJA47NWX77QG53NHUG65E7BHQ}

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	2026-05-17T23:51:33.639771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01520e7db6bfff03776d3d0dee93e13c2e22a039709a7a2dc1dae67392e77b3e

Aliases

arxiv: 1807.05967 · arxiv_version: 1807.05967v2 · doi: 10.48550/arxiv.1807.05967 · pith_short_12: AFJA47NWX77Q · pith_short_16: AFJA47NWX77QG53N · pith_short_8: AFJA47NW

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/AFJA47NWX77QG53NHUG65E7BHQ \
  | 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: 01520e7db6bfff03776d3d0dee93e13c2e22a039709a7a2dc1dae67392e77b3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05e4d491c05d6069a675ada336a8ca90163be884f6a6ed5dc6e0d95ec889f446",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-07-16T16:47:55Z",
    "title_canon_sha256": "04062e6167d94b696e7746163dc8183a6fb6940b73e37845f078e8f884ea70b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05967",
    "kind": "arxiv",
    "version": 2
  }
}