Pith Number

pith:WSSRAMIO

pith:2013:WSSRAMIO3JZKIU72P53E3SKE4J

not attested not anchored not stored refs pending

Hypersurfaces Invariant by Pfaff Equations

Luis G. Maza, Marcio G. Soares, Maur\'icio Corr\^ea Jr

arxiv:1308.3251 v2 · 2013-08-14 · math.AG · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSSRAMIO3JZKIU72P53E3SKE4J}

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	2026-05-18T00:03:34.702541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4a510310eda72a453fa7f764dc944e27b8105f80cee810457527e6d82c6e7a9

Aliases

arxiv: 1308.3251 · arxiv_version: 1308.3251v2 · doi: 10.48550/arxiv.1308.3251 · pith_short_12: WSSRAMIO3JZK · pith_short_16: WSSRAMIO3JZKIU72 · pith_short_8: WSSRAMIO

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/WSSRAMIO3JZKIU72P53E3SKE4J \
  | 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: b4a510310eda72a453fa7f764dc944e27b8105f80cee810457527e6d82c6e7a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a43252882c55fc98493f547a56feeddaa8506f91cbe2ae53244b80e0501f14dc",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-08-14T20:52:45Z",
    "title_canon_sha256": "1bf1b152fdc3aad77dd23c9ba9443ab88e6a3aa648a3461ccb77311e7f7c992e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3251",
    "kind": "arxiv",
    "version": 2
  }
}