Pith Number

pith:FSBGVUPX

pith:2019:FSBGVUPXMVN5ZDPOC2BL6BNYVV

not attested not anchored not stored refs pending

The Tandem Duplication Distance is NP-hard

Binhai Zhu, Manuel Lafond, Peng Zou

arxiv:1906.05266 v1 · 2019-06-12 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FSBGVUPXMVN5ZDPOC2BL6BNYVV}

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	2026-05-17T23:43:28.988661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c826ad1f7655bdc8dee1682bf05b8ad718a5d8e375c4e7d3601ae92189a8dee

Aliases

arxiv: 1906.05266 · arxiv_version: 1906.05266v1 · doi: 10.48550/arxiv.1906.05266 · pith_short_12: FSBGVUPXMVN5 · pith_short_16: FSBGVUPXMVN5ZDPO · pith_short_8: FSBGVUPX

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/FSBGVUPXMVN5ZDPOC2BL6BNYVV \
  | 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: 2c826ad1f7655bdc8dee1682bf05b8ad718a5d8e375c4e7d3601ae92189a8dee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "240a6d10b01441fd23a78c207ac0144a05f73a890b9269ba40dafd0765b52fe6",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-06-12T17:47:17Z",
    "title_canon_sha256": "fda2c8705804658aa5e756c126c0dbc89f29ea88582088cda14a2bad5e04ea5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.05266",
    "kind": "arxiv",
    "version": 1
  }
}