Pith Number

pith:XB4ZLJQR

pith:2019:XB4ZLJQRK7AXZWVCRBQILB2TG6

not attested not anchored not stored refs pending

Vertex-monochromatic connectivity of strong digraphs

Diego Gonz\'alez-Moreno, Juan Jos\'e Montellano-Ballesteros, Mucuy-Kak Guevara

arxiv:1902.10004 v1 · 2019-02-26 · 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{XB4ZLJQRK7AXZWVCRBQILB2TG6}

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	2026-05-17T23:52:34.873477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b87995a61157c17cdaa2886085875337ad2ce2f9a3d3f63d435db7c8b50e0c50

Aliases

arxiv: 1902.10004 · arxiv_version: 1902.10004v1 · doi: 10.48550/arxiv.1902.10004 · pith_short_12: XB4ZLJQRK7AX · pith_short_16: XB4ZLJQRK7AXZWVC · pith_short_8: XB4ZLJQR

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/XB4ZLJQRK7AXZWVCRBQILB2TG6 \
  | 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: b87995a61157c17cdaa2886085875337ad2ce2f9a3d3f63d435db7c8b50e0c50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6230af75fb29631f33faf0480841d2eb92b8268556d1e33b99c958e45ee96e5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-02-26T15:40:26Z",
    "title_canon_sha256": "f6efdb8a7c6bb6fa86a8b8f2a74c7effc9c950affc37c4c51f6b958bb9f3a969"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10004",
    "kind": "arxiv",
    "version": 1
  }
}