Pith Number

pith:4IMLEX4R

pith:2012:4IMLEX4REEWVZRMK7CQGE2EROF

not attested not anchored not stored refs pending

System adjustment for targeted performance combining symbolic regression and set inversion

Abdelouahab Kenoufi, Bernard Durand, Jean-Fran\c{c}ois Osselin

arxiv:1203.0388 v2 · 2012-03-02 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4IMLEX4REEWVZRMK7CQGE2EROF}

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	2026-05-18T03:51:01.929256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e218b25f91212d5cc58af8a06268917155b00f7ebb3ece5247269c5d82f443b6

Aliases

arxiv: 1203.0388 · arxiv_version: 1203.0388v2 · doi: 10.48550/arxiv.1203.0388 · pith_short_12: 4IMLEX4REEWV · pith_short_16: 4IMLEX4REEWVZRMK · pith_short_8: 4IMLEX4R

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/4IMLEX4REEWVZRMK7CQGE2EROF \
  | 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: e218b25f91212d5cc58af8a06268917155b00f7ebb3ece5247269c5d82f443b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b100552e36ae04fb9feb7505267a9a97984e470221f55d9f166cf876658d1830",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-03-02T08:22:18Z",
    "title_canon_sha256": "be6319042b6c129ef54d03b1b01d47dc202f641dc04cb88addbb1e5b7d4ad9c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0388",
    "kind": "arxiv",
    "version": 2
  }
}