Pith Number

pith:CE6S4Y2U

pith:2009:CE6S4Y2UPPHYZ3JUAQORLFAC7I

not attested not anchored not stored refs pending

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	2026-05-18T04:37:22.211092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

113d2e63547bcf8ced34041d159402fa194cb4eb6623144e28702dc82d30f97a

Aliases

arxiv: 0911.1848 · arxiv_version: 0911.1848v2 · doi: 10.48550/arxiv.0911.1848 · pith_short_12: CE6S4Y2UPPHY · pith_short_16: CE6S4Y2UPPHYZ3JU · pith_short_8: CE6S4Y2U

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/CE6S4Y2UPPHYZ3JUAQORLFAC7I \
  | 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: 113d2e63547bcf8ced34041d159402fa194cb4eb6623144e28702dc82d30f97a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35f67f57e59488e1bab320311f58848bef4436511410b873d72d14a09d369872",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2009-11-10T18:46:06Z",
    "title_canon_sha256": "820eca95f158b95d4148a427aae62375b3da1f838bb195ab31238a93574e2509"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1848",
    "kind": "arxiv",
    "version": 2
  }
}

pith:CE6S4Y2U

More common errors in finding exact solutions of nonlinear differential equations. I

Record completeness