Pith Number

pith:HEBCDDUD

pith:2017:HEBCDDUDT27P3WURVVCKFLMULN

not attested not anchored not stored refs pending

Complexity of Infimal Observable Superlanguages

Tom\'a\v{s} Masopust

arxiv:1703.05016 v1 · 2017-03-15 · cs.SY · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HEBCDDUDT27P3WURVVCKFLMULN}

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	2026-05-18T00:48:38.582916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3902218e839ebefdda91ad44a2ad945b6305e7c0d3a5999fbfd69fb1efc27140

Aliases

arxiv: 1703.05016 · arxiv_version: 1703.05016v1 · doi: 10.48550/arxiv.1703.05016 · pith_short_12: HEBCDDUDT27P · pith_short_16: HEBCDDUDT27P3WUR · pith_short_8: HEBCDDUD

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/HEBCDDUDT27P3WURVVCKFLMULN \
  | 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: 3902218e839ebefdda91ad44a2ad945b6305e7c0d3a5999fbfd69fb1efc27140

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "418b47a8afa3c07bd358c3149bd34e4eaa3ec2b2b632cd4a391fc58828f66492",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2017-03-15T08:55:50Z",
    "title_canon_sha256": "e43df012f48b8c59ad6bcd997bc5d1f45eb33c3a4ca2bda64bf9a08e86049010"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.05016",
    "kind": "arxiv",
    "version": 1
  }
}