Pith Number

pith:BFW5PTAP

pith:2018:BFW5PTAP2GHGM53EUPOUUCFQA2

not attested not anchored not stored refs pending

A note on spanning trees of connected $K_{1,t}$-free graphs whose stems have a few leaves

Dang Dinh Hanh, Pham Hoang Ha

arxiv:1810.08336 v1 · 2018-10-19 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BFW5PTAP2GHGM53EUPOUUCFQA2}

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	2026-05-18T00:02:48.428476Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

096dd7cc0fd18e667764a3dd4a08b006a9774bdbcd90f3f2e767795da5203052

Aliases

arxiv: 1810.08336 · arxiv_version: 1810.08336v1 · doi: 10.48550/arxiv.1810.08336 · pith_short_12: BFW5PTAP2GHG · pith_short_16: BFW5PTAP2GHGM53E · pith_short_8: BFW5PTAP

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/BFW5PTAP2GHGM53EUPOUUCFQA2 \
  | 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: 096dd7cc0fd18e667764a3dd4a08b006a9774bdbcd90f3f2e767795da5203052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "456402267a8c2109ae6fe55da124e0a78bee8c6d6811a00e21e7c9467a7cdf84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-10-19T02:35:19Z",
    "title_canon_sha256": "7f2376d5691caee71e7da631ba1d506f9af4eebabaf0ceaa220e83252673ef68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08336",
    "kind": "arxiv",
    "version": 1
  }
}