Pith Number

pith:XB3QHFEZ

pith:2018:XB3QHFEZ4ZD7ZJOSTGM73NOZFD

not attested not anchored not stored refs pending

Sharp uniqueness conditions for one-dimensional, autonomous ordinary differential equations

Ulrik Skre Fjordholm

arxiv:1804.08377 v2 · 2018-04-23 · 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{XB3QHFEZ4ZD7ZJOSTGM73NOZFD}

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	2026-05-18T00:09:09.348901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b877039499e647fca5d29999fdb5d928ce947c5157385c87a13b114f80c0ac55

Aliases

arxiv: 1804.08377 · arxiv_version: 1804.08377v2 · doi: 10.48550/arxiv.1804.08377 · pith_short_12: XB3QHFEZ4ZD7 · pith_short_16: XB3QHFEZ4ZD7ZJOS · pith_short_8: XB3QHFEZ

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/XB3QHFEZ4ZD7ZJOSTGM73NOZFD \
  | 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: b877039499e647fca5d29999fdb5d928ce947c5157385c87a13b114f80c0ac55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0ef269cbdbeccca0777d19dfc0d445da50f506e84e786f66916685584b65b4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2018-04-23T12:49:04Z",
    "title_canon_sha256": "279deba6e5fd249134e3ab6ef64cb9b1dcb76e624553b4a09a60373013c297f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08377",
    "kind": "arxiv",
    "version": 2
  }
}