Pith Number

pith:W4SLUO6N

pith:2017:W4SLUO6NELMJY5UR5PLZGRSYYW

not attested not anchored not stored refs pending

Non-Hamiltonian isotopic Lagrangians on the one-point blow-up of CP^2

Andr\'es Pedroza

arxiv:1702.04318 v2 · 2017-02-14 · 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{W4SLUO6NELMJY5UR5PLZGRSYYW}

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	2026-05-17T23:48:47.840769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b724ba3bcd22d89c7691ebd7934658c59b7c21b60713816db8359e9c7faff143

Aliases

arxiv: 1702.04318 · arxiv_version: 1702.04318v2 · doi: 10.48550/arxiv.1702.04318 · pith_short_12: W4SLUO6NELMJ · pith_short_16: W4SLUO6NELMJY5UR · pith_short_8: W4SLUO6N

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/W4SLUO6NELMJY5UR5PLZGRSYYW \
  | 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: b724ba3bcd22d89c7691ebd7934658c59b7c21b60713816db8359e9c7faff143

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dede78c99107fc3cc842f1910d1bb90294681758d2fc9f4e0a9ca019df2d56f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2017-02-14T18:12:47Z",
    "title_canon_sha256": "27bccef0174b5f47c0c5c04140afe106f29f841be2c8a99b4e4a501ddd91c955"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.04318",
    "kind": "arxiv",
    "version": 2
  }
}