Pith Number

pith:QNSUX2KI

pith:2013:QNSUX2KIH7ZLOW6DKLEWG2DFHG

not attested not anchored not stored refs pending

Moments Finiteness Problem and Center Problem for Ordinary Differential Equations

Alexander Brudnyi

arxiv:1305.4303 v1 · 2013-05-18 · 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{QNSUX2KIH7ZLOW6DKLEWG2DFHG}

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	2026-05-18T03:25:24.192661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83654be9483ff2b75bc352c963686539bd4e767f83778393029aa97af096f0fa

Aliases

arxiv: 1305.4303 · arxiv_version: 1305.4303v1 · doi: 10.48550/arxiv.1305.4303 · pith_short_12: QNSUX2KIH7ZL · pith_short_16: QNSUX2KIH7ZLOW6D · pith_short_8: QNSUX2KI

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/QNSUX2KIH7ZLOW6DKLEWG2DFHG \
  | 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: 83654be9483ff2b75bc352c963686539bd4e767f83778393029aa97af096f0fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcb6882f5843b166806d81a800be5266eac46e6d66d024f871b3a3862e7b11b6",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2013-05-18T21:41:16Z",
    "title_canon_sha256": "dca8ee955ed3319ce70c8be349f0b08954e267466cd4fab4c1a6534dc56e1bef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4303",
    "kind": "arxiv",
    "version": 1
  }
}