Pith Number

pith:J2WRSY6Z

pith:2018:J2WRSY6ZHXBLHEUQN42HKTASYB

not attested not anchored not stored refs pending

Automorphisms of hyperk\"ahler manifolds and groups acting on CAT(0) spaces

Egor Yasinsky, Nikon Kurnosov

arxiv:1810.09730 v2 · 2018-10-23 · math.AG · math.GR · math.MG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J2WRSY6ZHXBLHEUQN42HKTASYB}

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	2026-05-17T23:55:28.807737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ead1963d93dc2b392906f34754c12c05328c1ec9f4d77e3b725e62fe6cbe991

Aliases

arxiv: 1810.09730 · arxiv_version: 1810.09730v2 · doi: 10.48550/arxiv.1810.09730 · pith_short_12: J2WRSY6ZHXBL · pith_short_16: J2WRSY6ZHXBLHEUQ · pith_short_8: J2WRSY6Z

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/J2WRSY6ZHXBLHEUQN42HKTASYB \
  | 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: 4ead1963d93dc2b392906f34754c12c05328c1ec9f4d77e3b725e62fe6cbe991

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab5a15123f2ac0189086b72301ea3c36cbe1a60b542e2148428eb23376830641",
    "cross_cats_sorted": [
      "math.GR",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-10-23T08:55:20Z",
    "title_canon_sha256": "1339a45771086fb3756a68e24724418d5ddf99bb502c1c9b628b86d4c0df5aa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09730",
    "kind": "arxiv",
    "version": 2
  }
}