Pith Number

pith:DZEFTWH6

pith:2019:DZEFTWH6MMIU46LHIQUTOVVI5F

not attested not anchored not stored refs pending

Algebraic and qualitative aspects of quadratic vector fields related with classical orthogonal polynomials

Alberto Reyes Linero, Jorge Rodr\'iguez Contreras, Maria Campo Donado, Primitivo B Acosta-Hum\'anez

arxiv:1906.09764 v1 · 2019-06-24 · math.DS · 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{DZEFTWH6MMIU46LHIQUTOVVI5F}

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	2026-05-17T23:42:36.782725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e4859d8fe63114e796744293756a8e951b2b57fac1562e2760b2fd55246faaa

Aliases

arxiv: 1906.09764 · arxiv_version: 1906.09764v1 · doi: 10.48550/arxiv.1906.09764 · pith_short_12: DZEFTWH6MMIU · pith_short_16: DZEFTWH6MMIU46LH · pith_short_8: DZEFTWH6

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/DZEFTWH6MMIU46LHIQUTOVVI5F \
  | 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: 1e4859d8fe63114e796744293756a8e951b2b57fac1562e2760b2fd55246faaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d7c460811dd803404df1d6438738f742677db6a3e730379a8f0df59afe393c7",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2019-06-24T07:46:35Z",
    "title_canon_sha256": "8f4a02b9d7964ff70450c286e513bb69adb89414662eb5a8beaa728077da09d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.09764",
    "kind": "arxiv",
    "version": 1
  }
}