Pith Number

pith:WZOGVTWT

pith:2014:WZOGVTWTXJS5GJY2XMEU3R6GRG

not attested not anchored not stored refs pending

Equa\c{c}\~oes diferenciais pantogr\'aficas: retardo proporcional

Paulo R. C. Ruffino

arxiv:1405.6304 v1 · 2014-05-24 · math.HO · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WZOGVTWTXJS5GJY2XMEU3R6GRG}

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	2026-05-18T02:51:07.566493Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b65c6aced3ba65d3271abb094dc7c68994362faa9e802caad98f2524799788f8

Aliases

arxiv: 1405.6304 · arxiv_version: 1405.6304v1 · doi: 10.48550/arxiv.1405.6304 · pith_short_12: WZOGVTWTXJS5 · pith_short_16: WZOGVTWTXJS5GJY2 · pith_short_8: WZOGVTWT

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/WZOGVTWTXJS5GJY2XMEU3R6GRG \
  | 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: b65c6aced3ba65d3271abb094dc7c68994362faa9e802caad98f2524799788f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69cfcf5539bdf049f14d520162ebf8ce69c2f3962d06f1cd4ee8225ed85cc5ab",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2014-05-24T14:08:01Z",
    "title_canon_sha256": "3ced83447128accc6c7e07e4b287eca5cba7e79802a28c8884fddda9c3ed32e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6304",
    "kind": "arxiv",
    "version": 1
  }
}