Pith Number

pith:4SO5T4TZ

pith:2018:4SO5T4TZBEYLQMKST5S6MPX75E

not attested not anchored not stored refs pending

On a List of Ordinary Differential Equations Problems

Jorge Sotomayor

arxiv:1808.10571 v1 · 2018-08-31 · math.HO · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SO5T4TZBEYLQMKST5S6MPX75E}

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	2026-05-18T00:06:45.326669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e49dd9f2790930b831529f65e63effe924d6d532db763161930c9f1f935568cc

Aliases

arxiv: 1808.10571 · arxiv_version: 1808.10571v1 · doi: 10.48550/arxiv.1808.10571 · pith_short_12: 4SO5T4TZBEYL · pith_short_16: 4SO5T4TZBEYLQMKS · pith_short_8: 4SO5T4TZ

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/4SO5T4TZBEYLQMKST5S6MPX75E \
  | 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: e49dd9f2790930b831529f65e63effe924d6d532db763161930c9f1f935568cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fae91e06a8a241d11b9806c327acd0420a379013863e542c62df236ecc54f8f8",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2018-08-31T02:37:10Z",
    "title_canon_sha256": "9e5eb7c30bfa1dd710f39f861c2eba15b74264ac08355bf295fe4cce123aba7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10571",
    "kind": "arxiv",
    "version": 1
  }
}