Pith Number

pith:SC6D5HHU

pith:2019:SC6D5HHUN534OQDD74VSH2QTN6

not attested not anchored not stored refs pending

Int-amplified endomorphisms on normal projective surfaces

Shou Yoshikawa, Yohsuke Matsuzawa

arxiv:1902.06071 v1 · 2019-02-16 · 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{SC6D5HHUN534OQDD74VSH2QTN6}

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	2026-05-17T23:53:46.659547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90bc3e9cf46f77c74063ff2b23ea136f952ab6a646183e0d0a97cb8d3b5e343e

Aliases

arxiv: 1902.06071 · arxiv_version: 1902.06071v1 · doi: 10.48550/arxiv.1902.06071 · pith_short_12: SC6D5HHUN534 · pith_short_16: SC6D5HHUN534OQDD · pith_short_8: SC6D5HHU

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/SC6D5HHUN534OQDD74VSH2QTN6 \
  | 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: 90bc3e9cf46f77c74063ff2b23ea136f952ab6a646183e0d0a97cb8d3b5e343e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e62b6c7072748fb6cbf51d07529bfe1308c402935f698ac3dfdbadcfd7ed7ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-02-16T09:07:20Z",
    "title_canon_sha256": "149633f5f35b4f70d417344e7052fd112f82de4bee5c8f18fe34b010b08228aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06071",
    "kind": "arxiv",
    "version": 1
  }
}