Pith Number

pith:PBPIL6BF

pith:2013:PBPIL6BFOAC6B7LMWHOKFXQ4KD

not attested not anchored not stored refs pending

Formally expressing the semantics of observer-based fault detection software

Alireza Esna Ashari, Eric Feron

arxiv:1309.1485 v3 · 2013-09-05 · cs.SE · 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{PBPIL6BFOAC6B7LMWHOKFXQ4KD}

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	2026-05-18T03:05:37.588944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

785e85f8257005e0fd6cb1dca2de1c50f6221e8ccf3bada0acbfdce57c92f7f7

Aliases

arxiv: 1309.1485 · arxiv_version: 1309.1485v3 · doi: 10.48550/arxiv.1309.1485 · pith_short_12: PBPIL6BFOAC6 · pith_short_16: PBPIL6BFOAC6B7LM · pith_short_8: PBPIL6BF

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/PBPIL6BFOAC6B7LMWHOKFXQ4KD \
  | 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: 785e85f8257005e0fd6cb1dca2de1c50f6221e8ccf3bada0acbfdce57c92f7f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26e65304bc5bf1b94835d9370f5b9ada08d1856eb8e3240d0a2af0b3551d5239",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2013-09-05T20:39:34Z",
    "title_canon_sha256": "abe09741aa2bd9a2d0aef146e39417a56fe27668ab70054df4126d84c2fd95a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1485",
    "kind": "arxiv",
    "version": 3
  }
}