Pith Number

pith:OUJG4K7T

pith:2014:OUJG4K7TPJGC5PXY64KVO7OC6I

not attested not anchored not stored refs pending

Universal Curves in the Center Problem for Abel Differential Equations

Alexander Brudnyi

arxiv:1405.4924 v1 · 2014-05-20 · 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{OUJG4K7TPJGC5PXY64KVO7OC6I}

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	2026-05-17T23:53:14.388880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75126e2bf37a4c2ebef8f715577dc2f21e3d1c7c8b575febf52933b9fc6236fb

Aliases

arxiv: 1405.4924 · arxiv_version: 1405.4924v1 · doi: 10.48550/arxiv.1405.4924 · pith_short_12: OUJG4K7TPJGC · pith_short_16: OUJG4K7TPJGC5PXY · pith_short_8: OUJG4K7T

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/OUJG4K7TPJGC5PXY64KVO7OC6I \
  | 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: 75126e2bf37a4c2ebef8f715577dc2f21e3d1c7c8b575febf52933b9fc6236fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f16dda0a683b5ed5c280e8d9e16839ce42eac42a11f67bf347cdfd0ceb5b4da9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2014-05-20T00:42:01Z",
    "title_canon_sha256": "2a3261286869d9bca22be876b41201c158afb2b4802f945cacebdd31dd440ab9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4924",
    "kind": "arxiv",
    "version": 1
  }
}