Pith Number

pith:EP4NG45D

pith:2008:EP4NG45DDZPGABIBPIFWZ73XXS

not attested not anchored not stored refs pending

Semitoric integrable systems on symplectic 4-manifolds

Alvaro Pelayo, San Vu Ngoc

arxiv:0806.1946 v1 · 2008-06-11 · math.SG · 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{EP4NG45DDZPGABIBPIFWZ73XXS}

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	2026-05-18T02:15:51.663451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f8d373a31e5e6005017a0b6cff77bc8a53d0fbd66082cf78b67eb089bb7c39

Aliases

arxiv: 0806.1946 · arxiv_version: 0806.1946v1 · doi: 10.48550/arxiv.0806.1946 · pith_short_12: EP4NG45DDZPG · pith_short_16: EP4NG45DDZPGABIB · pith_short_8: EP4NG45D

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/EP4NG45DDZPGABIBPIFWZ73XXS \
  | 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: 23f8d373a31e5e6005017a0b6cff77bc8a53d0fbd66082cf78b67eb089bb7c39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08708f35a81a778dcc72527318a74754fcc9381acea03c3384896d360f4fcf2a",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2008-06-11T19:46:08Z",
    "title_canon_sha256": "a8ebee27b839ee81b6cf12ddd989667eb7e97778a3969a7a9a41b3776ddd4c5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.1946",
    "kind": "arxiv",
    "version": 1
  }
}