Pith Number

pith:YMQCWNT7

pith:2004:YMQCWNT7BKZCKTBVZ2B4DQTEMM

not attested not anchored not stored refs pending

Symplectomorphism groups and isotropic skeletons

Joseph Coffey

arxiv:math/0404496 v4 · 2004-04-27 · math.SG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YMQCWNT7BKZCKTBVZ2B4DQTEMM}

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	2026-05-18T02:38:00.110021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3202b367f0ab2254c35ce83c1c26463139f45527fb625cc1be013b77442d51a

Aliases

arxiv: math/0404496 · arxiv_version: math/0404496v4 · doi: 10.48550/arxiv.math/0404496 · pith_short_12: YMQCWNT7BKZC · pith_short_16: YMQCWNT7BKZCKTBV · pith_short_8: YMQCWNT7

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/YMQCWNT7BKZCKTBVZ2B4DQTEMM \
  | 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: c3202b367f0ab2254c35ce83c1c26463139f45527fb625cc1be013b77442d51a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3214339f09caaad60a32a49fa6e593c77aeaf8d4521942abbda02a76ced9aea",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.SG",
    "submitted_at": "2004-04-27T18:21:46Z",
    "title_canon_sha256": "d322986498381f4646c887e5dbd11e038b7204e491dcaedfd0aaf45f6fc5278e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0404496",
    "kind": "arxiv",
    "version": 4
  }
}