Pith Number

pith:KGWPSL6L

pith:2015:KGWPSL6L6ZAEA2H2RL4LBYW7G5

not attested not anchored not stored refs pending

On Semi-isogenous mixed surfaces

Davide Frapporti, Nicola Cancian

arxiv:1510.09055 v3 · 2015-10-30 · 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{KGWPSL6L6ZAEA2H2RL4LBYW7G5}

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	2026-05-18T00:40:46.891406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51acf92fcbf6404068fa8af8b0e2df37413fd2235344126e3453a423dd9a9edd

Aliases

arxiv: 1510.09055 · arxiv_version: 1510.09055v3 · doi: 10.48550/arxiv.1510.09055 · pith_short_12: KGWPSL6L6ZAE · pith_short_16: KGWPSL6L6ZAEA2H2 · pith_short_8: KGWPSL6L

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/KGWPSL6L6ZAEA2H2RL4LBYW7G5 \
  | 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: 51acf92fcbf6404068fa8af8b0e2df37413fd2235344126e3453a423dd9a9edd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cb3afbe59984519df515ad79b708eb1c9a386e4aa251e825b23b11354ca2ddb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-10-30T12:27:21Z",
    "title_canon_sha256": "82b25188357621dfa2baaf91f4a0939b796ff15a2094cc9c8ce23920436706c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.09055",
    "kind": "arxiv",
    "version": 3
  }
}