Pith Number

pith:OSHMBV6Q

pith:2019:OSHMBV6QOSYHPNZUJSYMHPH6PP

not attested not anchored not stored refs pending

Spine removal surgery and the geography of symplectic fillings

Chris Wendl, Samuel Lisi

arxiv:1902.01326 v1 · 2019-02-04 · math.SG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OSHMBV6QOSYHPNZUJSYMHPH6PP}

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	2026-05-17T23:54:49.155758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

748ec0d7d074b077b7344cb0c3bcfe7bf72952199142598df74040ad3f9ff845

Aliases

arxiv: 1902.01326 · arxiv_version: 1902.01326v1 · doi: 10.48550/arxiv.1902.01326 · pith_short_12: OSHMBV6QOSYH · pith_short_16: OSHMBV6QOSYHPNZU · pith_short_8: OSHMBV6Q

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/OSHMBV6QOSYHPNZUJSYMHPH6PP \
  | 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: 748ec0d7d074b077b7344cb0c3bcfe7bf72952199142598df74040ad3f9ff845

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5655699161619503cfed0c23faff54530b9727a108f36b63d9195f8630e88719",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2019-02-04T17:30:10Z",
    "title_canon_sha256": "b345e7fafe1354d11c54e0cbaf3162610d809bc332f5fada9626bf88dff1a28c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01326",
    "kind": "arxiv",
    "version": 1
  }
}