Pith Number

pith:VXRBJ3OF

pith:2014:VXRBJ3OFF3F77CH5JFHDE7HK4R

not attested not anchored not stored refs pending

The Internal Model Principle for Systems with Unbounded Control and Observation

Lassi Paunonen, Seppo Pohjolainen

arxiv:1409.1773 v1 · 2014-09-05 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VXRBJ3OFF3F77CH5JFHDE7HK4R}

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	2026-05-18T01:40:59.846914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ade214edc52ecbff88fd494e327ceae463ad37037db822b10f3c22d975d45f13

Aliases

arxiv: 1409.1773 · arxiv_version: 1409.1773v1 · doi: 10.48550/arxiv.1409.1773 · pith_short_12: VXRBJ3OFF3F7 · pith_short_16: VXRBJ3OFF3F77CH5 · pith_short_8: VXRBJ3OF

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/VXRBJ3OFF3F77CH5JFHDE7HK4R \
  | 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: ade214edc52ecbff88fd494e327ceae463ad37037db822b10f3c22d975d45f13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e63d8bd25429020d2c483a366f802f90356fc42d00ecdfbba68af8f7e8bcb91",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-09-05T12:58:15Z",
    "title_canon_sha256": "b2eb4e5e7cc6419a3c6a46a661d75c75944df38b7303f797e2f80a7e3f339b5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1773",
    "kind": "arxiv",
    "version": 1
  }
}