Pith Number

pith:F4UDFZPF

pith:2015:F4UDFZPFQFLC4HDMS5VLXCW42J

not attested not anchored not stored refs pending

Decidability in the logic of subsequences and supersequences

Philippe Schnoebelen, Prateek Karandikar

arxiv:1510.03994 v1 · 2015-10-14 · cs.LO · 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{F4UDFZPFQFLC4HDMS5VLXCW42J}

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	2026-05-18T01:11:27.156702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f2832e5e581562e1c6c976abb8adcd276abce2076a42a0a8f78982b9cb15ca5

Aliases

arxiv: 1510.03994 · arxiv_version: 1510.03994v1 · doi: 10.48550/arxiv.1510.03994 · pith_short_12: F4UDFZPFQFLC · pith_short_16: F4UDFZPFQFLC4HDM · pith_short_8: F4UDFZPF

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/F4UDFZPFQFLC4HDMS5VLXCW42J \
  | 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: 2f2832e5e581562e1c6c976abb8adcd276abce2076a42a0a8f78982b9cb15ca5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9c9f8210fd860a60cb3c5796177a32dfce4f1cd62b1151bca755672c7c91b28",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-10-14T08:21:47Z",
    "title_canon_sha256": "c91b3476a250ae4da1e7c8baa515113560987e31e7cb3d4ad4ba690a82f746d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.03994",
    "kind": "arxiv",
    "version": 1
  }
}