Pith Number

pith:3EJWS7Q2

pith:2005:3EJWS7Q2UUGLVNER2NVNMN5RYL

not attested not anchored not stored refs pending

Automorphisms of K3 surfaces

D. -Q. Zhang

arxiv:math/0506612 v1 · 2005-06-30 · 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{3EJWS7Q2UUGLVNER2NVNMN5RYL}

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	2026-05-18T00:12:57.500640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d913697e1aa50cbab491d36ad637b1c2f091f3b39b1edcf6e70e31104d905036

Aliases

arxiv: math/0506612 · arxiv_version: math/0506612v1 · doi: 10.48550/arxiv.math/0506612 · pith_short_12: 3EJWS7Q2UUGL · pith_short_16: 3EJWS7Q2UUGLVNER · pith_short_8: 3EJWS7Q2

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/3EJWS7Q2UUGLVNER2NVNMN5RYL \
  | 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: d913697e1aa50cbab491d36ad637b1c2f091f3b39b1edcf6e70e31104d905036

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21413a08ca038d72520f1ddceacd290a1af2a4492f89b94e53f5846a2749cc63",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2005-06-30T03:39:47Z",
    "title_canon_sha256": "beec6eca1e5e4784cf1e6f483e1276b9cf8fe9de2d3f45c1be9aba71e41dccdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0506612",
    "kind": "arxiv",
    "version": 1
  }
}