Pith Number

pith:NPFFZ2QF

pith:2012:NPFFZ2QFNKUJSO7YRBID64CIZX

not attested not anchored not stored refs pending

A para-model agent for dynamical systems

Lo\"ic Michel

arxiv:1202.4707 v6 · 2012-02-21 · math.OC · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPFFZ2QFNKUJSO7YRBID64CIZX}

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	2026-05-18T00:21:38.239580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bca5cea056aa8993bf888503f7048cdece44452a7bc08a339b8de2addb54d34

Aliases

arxiv: 1202.4707 · arxiv_version: 1202.4707v6 · doi: 10.48550/arxiv.1202.4707 · pith_short_12: NPFFZ2QFNKUJ · pith_short_16: NPFFZ2QFNKUJSO7Y · pith_short_8: NPFFZ2QF

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/NPFFZ2QFNKUJSO7YRBID64CIZX \
  | 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: 6bca5cea056aa8993bf888503f7048cdece44452a7bc08a339b8de2addb54d34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd8a60831f22e9e2c857d9cd01b5b18a3ac92cba6cdfd4733d2689224b1fa63d",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-02-21T17:27:46Z",
    "title_canon_sha256": "94c0c9fcb5ae0207f9f150e1e2f4e7f93c21a14dedaa077214edc03fb6b6addf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4707",
    "kind": "arxiv",
    "version": 6
  }
}