Pith Number

pith:IZFUKCQM

pith:2025:IZFUKCQMSMCR6PD4H6FLK2HBUP

not attested not anchored not stored refs pending

Nodal surfaces in $\mathbb{P}^3$ and coding theory

Sascha Kurz

arxiv:2505.17531 v1 · 2025-05-23 · math.CO · cs.IT · math.AG · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZFUKCQMSMCR6PD4H6FLK2HBUP}

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	2026-07-05T11:08:27.722369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

464b450a0c93051f3c7c3f8ab568e1a3dd9db8360a105ffc532b5ba3f1088226

Aliases

arxiv: 2505.17531 · arxiv_version: 2505.17531v1 · doi: 10.48550/arxiv.2505.17531 · pith_short_12: IZFUKCQMSMCR · pith_short_16: IZFUKCQMSMCR6PD4 · pith_short_8: IZFUKCQM

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/IZFUKCQMSMCR6PD4H6FLK2HBUP \
  | 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: 464b450a0c93051f3c7c3f8ab568e1a3dd9db8360a105ffc532b5ba3f1088226

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2e47c72d8afca3f226a64196e89c81cda84c7677d1f92dad5e2c5f14c3bfff4",
    "cross_cats_sorted": [
      "cs.IT",
      "math.AG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-05-23T06:39:07Z",
    "title_canon_sha256": "55549fa970aeef04767ef5a26a6d4c2195e0cad9fb52584fcfe64bd33e6910c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.17531",
    "kind": "arxiv",
    "version": 1
  }
}