Pith Number

pith:UZJQRJTA

pith:2014:UZJQRJTARCIO3UDPKIL3SZVLXX

not attested not anchored not stored refs pending

Notes on automorphisms of surfaces of general type with $p_g=0$ and $K^2=7$

Yifan Chen

arxiv:1408.2254 v1 · 2014-08-10 · 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{UZJQRJTARCIO3UDPKIL3SZVLXX}

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	2026-05-18T02:45:29.883565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a65308a6608890edd06f5217b966abbdc1158d1b302c3633372c3176d4f895e0

Aliases

arxiv: 1408.2254 · arxiv_version: 1408.2254v1 · doi: 10.48550/arxiv.1408.2254 · pith_short_12: UZJQRJTARCIO · pith_short_16: UZJQRJTARCIO3UDP · pith_short_8: UZJQRJTA

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/UZJQRJTARCIO3UDPKIL3SZVLXX \
  | 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: a65308a6608890edd06f5217b966abbdc1158d1b302c3633372c3176d4f895e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6f426495fc74166fae12a7aa71a95739c06635877c40c8c4b6efa37ea4f2a24",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-08-10T17:01:22Z",
    "title_canon_sha256": "d8f8805a071ea6e3e15e44f22cf96fdfc3c403f16e3f25136b265bedc475a8ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2254",
    "kind": "arxiv",
    "version": 1
  }
}