Pith Number

pith:HXXYZ6EM

pith:2017:HXXYZ6EMLLEMMUB27TNYJMAXCZ

not attested not anchored not stored refs pending

A few explicit examples of complex dynamics of inertia groups on surfaces - a question of Professor Igor Dolgachev

Keiji Oguiso

arxiv:1704.03142 v2 · 2017-04-11 · 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{HXXYZ6EMLLEMMUB27TNYJMAXCZ}

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	2026-05-18T00:00:09.316951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3def8cf88c5ac8c6503afcdb84b017165e709e96c2968820f1a87076e6412b42

Aliases

arxiv: 1704.03142 · arxiv_version: 1704.03142v2 · doi: 10.48550/arxiv.1704.03142 · pith_short_12: HXXYZ6EMLLEM · pith_short_16: HXXYZ6EMLLEMMUB2 · pith_short_8: HXXYZ6EM

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/HXXYZ6EMLLEMMUB27TNYJMAXCZ \
  | 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: 3def8cf88c5ac8c6503afcdb84b017165e709e96c2968820f1a87076e6412b42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe7f8c45e39799981ad95c041a1b7a3eadbd59644482f2e3ce2bf87b8b11ac73",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-04-11T04:40:09Z",
    "title_canon_sha256": "39e684239450343583c90f32140ce4848975fdfdb4efbee99bf922424f1ad170"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.03142",
    "kind": "arxiv",
    "version": 2
  }
}