Pith Number

pith:BNQW6DXL

pith:2019:BNQW6DXLSOTJUJTZOZDOOYU3ZD

not attested not anchored not stored refs pending

Symplectic surfaces and bridge position

Peter Lambert-Cole

arxiv:1904.05137 v1 · 2019-04-10 · 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{BNQW6DXLSOTJUJTZOZDOOYU3ZD}

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	2026-05-17T23:48:54.048487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b616f0eeb93a69a26797646e7629bc8d743c141d7d5a91a27d8bd74327e9932

Aliases

arxiv: 1904.05137 · arxiv_version: 1904.05137v1 · doi: 10.48550/arxiv.1904.05137 · pith_short_12: BNQW6DXLSOTJ · pith_short_16: BNQW6DXLSOTJUJTZ · pith_short_8: BNQW6DXL

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/BNQW6DXLSOTJUJTZOZDOOYU3ZD \
  | 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: 0b616f0eeb93a69a26797646e7629bc8d743c141d7d5a91a27d8bd74327e9932

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45ca19d9c49f53bf0d08f87ae5df2dcc6de6c37f973fd16f1000e28bd2d77e02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-04-10T12:38:30Z",
    "title_canon_sha256": "85b1a8ce38f0615432019a4ea568c10a02562f0b3f040ec477f7078086c0cc27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05137",
    "kind": "arxiv",
    "version": 1
  }
}