Pith Number

pith:OL5YVV5G

pith:2016:OL5YVV5GSN4W7QJGNZF3QDRCFF

not attested not anchored not stored refs pending

The robust recoverable spanning tree problem with interval costs is polynomially solvable

Adam Kasperski, Mikita Hradovich, Pawel Zielinski

arxiv:1602.07422 v2 · 2016-02-24 · 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{OL5YVV5GSN4W7QJGNZF3QDRCFF}

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	2026-05-18T01:19:33.708720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72fb8ad7a693796fc1266e4bb80e222943dbb2a8a0a9235deef1f4aae4a3ab94

Aliases

arxiv: 1602.07422 · arxiv_version: 1602.07422v2 · doi: 10.48550/arxiv.1602.07422 · pith_short_12: OL5YVV5GSN4W · pith_short_16: OL5YVV5GSN4W7QJG · pith_short_8: OL5YVV5G

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/OL5YVV5GSN4W7QJGNZF3QDRCFF \
  | 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: 72fb8ad7a693796fc1266e4bb80e222943dbb2a8a0a9235deef1f4aae4a3ab94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57f9b7c9d7a356d7391cca06e727419b49669abac6587ed09e59c585557f3e24",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-02-24T07:29:06Z",
    "title_canon_sha256": "27ec9749d4dd9f101c9af69997fa00e196a8ef6a7a9575f6eb505c9650ee8736"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.07422",
    "kind": "arxiv",
    "version": 2
  }
}