Pith Number

pith:G4US2YAK

pith:2019:G4US2YAKH3EXYZX6DKHBRUYXS5

not attested not anchored not stored refs pending

On the cohomology of surfaces with $p_g = q = 2$ and maximal Albanese dimension

Johan Commelin, Matteo Penegini

arxiv:1901.00193 v1 · 2019-01-01 · 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{G4US2YAKH3EXYZX6DKHBRUYXS5}

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	2026-05-17T23:57:06.742070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37292d600a3ec97c66fe1a8e18d31797441ceab537c366e19a6c59534380bc6e

Aliases

arxiv: 1901.00193 · arxiv_version: 1901.00193v1 · doi: 10.48550/arxiv.1901.00193 · pith_short_12: G4US2YAKH3EX · pith_short_16: G4US2YAKH3EXYZX6 · pith_short_8: G4US2YAK

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/G4US2YAKH3EXYZX6DKHBRUYXS5 \
  | 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: 37292d600a3ec97c66fe1a8e18d31797441ceab537c366e19a6c59534380bc6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c81f807a56bb813c6d239aa8777804b08e0ad018d3b30990fa2b673f394099ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-01-01T18:28:01Z",
    "title_canon_sha256": "b9377edbf5f78613573d67628e4fca2057b65e3dfa6b971f0c77bdbaedec26c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00193",
    "kind": "arxiv",
    "version": 1
  }
}