Pith Number

pith:HUIKGIAJ

pith:2008:HUIKGIAJLIJUYYGZ2ULJHK2E6F

not attested not anchored not stored refs pending

Heegaard Floer homology and genus one, one boundary component open books

John A. Baldwin

arxiv:0804.3624 v2 · 2008-04-23 · math.GT · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HUIKGIAJLIJUYYGZ2ULJHK2E6F}

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	2026-05-18T02:58:11.597695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d10a320095a134c60d9d51693ab44f1563f9785e2e1415ecb68944308c558fe

Aliases

arxiv: 0804.3624 · arxiv_version: 0804.3624v2 · doi: 10.48550/arxiv.0804.3624 · pith_short_12: HUIKGIAJLIJU · pith_short_16: HUIKGIAJLIJUYYGZ · pith_short_8: HUIKGIAJ

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/HUIKGIAJLIJUYYGZ2ULJHK2E6F \
  | 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: 3d10a320095a134c60d9d51693ab44f1563f9785e2e1415ecb68944308c558fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bda054c80b23ae8c8b76b5041cdacfc87d884c70ab9a74c13c3109bcd243485",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2008-04-23T00:40:38Z",
    "title_canon_sha256": "74f968fd821c5bcc70e710e95608c808d0f89ffb0136558808d28174d13a4b66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3624",
    "kind": "arxiv",
    "version": 2
  }
}