Pith Number

pith:FILBL2A5

pith:2017:FILBL2A5IAQC7UFLAYUDL2XR2Z

not attested not anchored not stored refs pending

Computing control invariant sets is easy

Mazen Alamir, Mirko Fiacchini

arxiv:1708.04797 v1 · 2017-08-16 · 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{FILBL2A5IAQC7UFLAYUDL2XR2Z}

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	2026-05-18T00:02:45.642912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a1615e81d40202fd0ab062835eaf1d6416dcfbc6fe8f8803fbabf65774a1031

Aliases

arxiv: 1708.04797 · arxiv_version: 1708.04797v1 · doi: 10.48550/arxiv.1708.04797 · pith_short_12: FILBL2A5IAQC · pith_short_16: FILBL2A5IAQC7UFL · pith_short_8: FILBL2A5

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/FILBL2A5IAQC7UFLAYUDL2XR2Z \
  | 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: 2a1615e81d40202fd0ab062835eaf1d6416dcfbc6fe8f8803fbabf65774a1031

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6dfb91e788478c9610e655f61986efbf459b1eb5c05fadbdcd1af11079561f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2017-08-16T08:04:38Z",
    "title_canon_sha256": "cc3a97b1aff23b12b2019a1eb21a4aeaa568a5df3ab764557390f2cf0e931725"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04797",
    "kind": "arxiv",
    "version": 1
  }
}