Pith Number

pith:4MFX7WYX

pith:2020:4MFX7WYXI3HS6YI32BKPGRRE44

not attested not anchored not stored refs pending

The Longest Run Subsequence Problem: Further Complexity Results

Florian Sikora, Riccardo Dondi

arxiv:2011.08119 v2 · 2020-11-16 · cs.DS · cs.CC · q-bio.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4MFX7WYXI3HS6YI32BKPGRRE44}

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	2026-07-05T02:51:11.582949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e30b7fdb1746cf2f611bd054f34624e72941f2fdc2c5fde139f929aaae4661b5

Aliases

arxiv: 2011.08119 · arxiv_version: 2011.08119v2 · doi: 10.48550/arxiv.2011.08119 · pith_short_12: 4MFX7WYXI3HS · pith_short_16: 4MFX7WYXI3HS6YI3 · pith_short_8: 4MFX7WYX

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/4MFX7WYXI3HS6YI32BKPGRRE44 \
  | 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: e30b7fdb1746cf2f611bd054f34624e72941f2fdc2c5fde139f929aaae4661b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c441b5615b0bd6c02c9f7478a3b561905d1e25f72fd26d469dd58feeddc0d57",
    "cross_cats_sorted": [
      "cs.CC",
      "q-bio.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2020-11-16T17:31:51Z",
    "title_canon_sha256": "650e26f05232ab95e635b62d777d5e7f70ad1e59223a48a4fbb048ab2fc1424d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.08119",
    "kind": "arxiv",
    "version": 2
  }
}