Pith Number

pith:Y3B2RXK2

pith:2017:Y3B2RXK2ZGGPZG3PMBJEWLS6RK

not attested not anchored not stored refs pending

Parameterized complexity of finding a spanning tree with minimum reload cost diameter

Christophe Paul, Didem G\"oz\"upek, Dimitrios M. Thilikos, Ignasi Sau, Julien Baste, Mordechai Shalom

arxiv:1703.01686 v2 · 2017-03-05 · 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{Y3B2RXK2ZGGPZG3PMBJEWLS6RK}

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	2026-05-18T00:45:53.876880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6c3a8dd5ac98cfc9b6f60524b2e5e8a93bfa81feecde2d7c5b50a9fc41cd539

Aliases

arxiv: 1703.01686 · arxiv_version: 1703.01686v2 · doi: 10.48550/arxiv.1703.01686 · pith_short_12: Y3B2RXK2ZGGP · pith_short_16: Y3B2RXK2ZGGPZG3P · pith_short_8: Y3B2RXK2

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/Y3B2RXK2ZGGPZG3PMBJEWLS6RK \
  | 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: c6c3a8dd5ac98cfc9b6f60524b2e5e8a93bfa81feecde2d7c5b50a9fc41cd539

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "320658cea8724499f077a0a764fd46691e6941530237669e0d9ec5f3090c4a2b",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-03-05T23:06:03Z",
    "title_canon_sha256": "6c942a5089e4d53b8f0e9efa71c0687b2d7324a0d2cb31caf7d4a76be288d912"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.01686",
    "kind": "arxiv",
    "version": 2
  }
}