Pith Number

pith:PBDR7RKL

pith:2017:PBDR7RKLP4Q5GLKMQV3VIITQMB

not attested not anchored not stored refs pending

On the Simultaneous Minimum Spanning Trees Problem

Jakub Pek\'arek, Jakub T\v{e}tek, Jana Novotn\'a, Martin Smol\'ik, Martin T\"opfer, Mat\v{e}j Kone\v{c}n\'y, Stanislav Ku\v{c}era

arxiv:1712.00253 v1 · 2017-12-01 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PBDR7RKLP4Q5GLKMQV3VIITQMB}

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	2026-05-18T00:29:06.754841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78471fc54b7f21d32d4c857754227060666a8b1cf9a902aaaf14af4efe2b0092

Aliases

arxiv: 1712.00253 · arxiv_version: 1712.00253v1 · doi: 10.48550/arxiv.1712.00253 · pith_short_12: PBDR7RKLP4Q5 · pith_short_16: PBDR7RKLP4Q5GLKM · pith_short_8: PBDR7RKL

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/PBDR7RKLP4Q5GLKMQV3VIITQMB \
  | 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: 78471fc54b7f21d32d4c857754227060666a8b1cf9a902aaaf14af4efe2b0092

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff8f7103ac8e6c7ab9e37cd79a223748cf94e30049a1578b23fb81eece61894d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-12-01T09:49:16Z",
    "title_canon_sha256": "64a9a24f85fc4b510818dfd3b18360a2f2fc62d9735763a017c5cb545c32a5ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.00253",
    "kind": "arxiv",
    "version": 1
  }
}