Pith Number

pith:MBTVMKSU

pith:2011:MBTVMKSUYFX3GO5UMLM665YOWA

not attested not anchored not stored refs pending

Improved Lower Bounds for the Shortest Superstring and Related Problems

Marek Karpinski, Richard Schmied

arxiv:1111.5442 v3 · 2011-11-23 · cs.CC · cs.DM · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MBTVMKSUYFX3GO5UMLM665YOWA}

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	2026-05-18T03:47:01.305069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6067562a54c16fb33bb462d9ef770eb017c6f62f0d45f14350c77b7c17a67414

Aliases

arxiv: 1111.5442 · arxiv_version: 1111.5442v3 · doi: 10.48550/arxiv.1111.5442 · pith_short_12: MBTVMKSUYFX3 · pith_short_16: MBTVMKSUYFX3GO5U · pith_short_8: MBTVMKSU

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/MBTVMKSUYFX3GO5UMLM665YOWA \
  | 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: 6067562a54c16fb33bb462d9ef770eb017c6f62f0d45f14350c77b7c17a67414

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b7234d4f13e675c9c814d7429ec7b2f940887f9d1c91fef0e03069c3c737feb",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-11-23T10:00:50Z",
    "title_canon_sha256": "08e368e6103f11cf64b4d968ec5d72e84753308722787fdd90888f2e5ca898a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5442",
    "kind": "arxiv",
    "version": 3
  }
}