Pith Number

pith:EYRA5CPM

pith:2009:EYRA5CPMAZ4T5DDYKVUC5QEM2C

not attested not anchored not stored refs pending

Transitivity of generic semigroups of area-preserving surface diffeomorphisms

Andres Koropecki, Meysam Nassiri

arxiv:0905.0305 v3 · 2009-05-04 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EYRA5CPMAZ4T5DDYKVUC5QEM2C}

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	2026-05-18T04:14:38.328825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26220e89ec06793e8c7855682ec08cd0bca728123f22d5cd5e8eb621e2a32626

Aliases

arxiv: 0905.0305 · arxiv_version: 0905.0305v3 · doi: 10.48550/arxiv.0905.0305 · pith_short_12: EYRA5CPMAZ4T · pith_short_16: EYRA5CPMAZ4T5DDY · pith_short_8: EYRA5CPM

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/EYRA5CPMAZ4T5DDYKVUC5QEM2C \
  | 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: 26220e89ec06793e8c7855682ec08cd0bca728123f22d5cd5e8eb621e2a32626

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5286d0c6970458470be0a37d98248c67b900b689bb053ed7d3d28cf0383364d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2009-05-04T02:52:20Z",
    "title_canon_sha256": "7ae7289e8de98cbe0668eeb7d6147ed4858d4b83223f5e7b38171f1f8190297a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0305",
    "kind": "arxiv",
    "version": 3
  }
}