Pith Number

pith:V6OMJSQM

pith:2019:V6OMJSQMLXXF5TKND32FNMB2BJ

not attested not anchored not stored refs pending

Sufficient conditions for a digraph to admit a $(1,\leq\ell)$-identifying code

B. Mart\'inez-Barona, C. Balbuena, C. Dalf\'o

arxiv:1902.04913 v1 · 2019-02-13 · 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{V6OMJSQMLXXF5TKND32FNMB2BJ}

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	2026-05-17T23:54:03.892702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af9cc4ca0c5dee5ecd4d1ef456b03a0a4a39de2bca9ea7c1fb9cec0f5a5f0462

Aliases

arxiv: 1902.04913 · arxiv_version: 1902.04913v1 · doi: 10.48550/arxiv.1902.04913 · pith_short_12: V6OMJSQMLXXF · pith_short_16: V6OMJSQMLXXF5TKN · pith_short_8: V6OMJSQM

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/V6OMJSQMLXXF5TKND32FNMB2BJ \
  | 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: af9cc4ca0c5dee5ecd4d1ef456b03a0a4a39de2bca9ea7c1fb9cec0f5a5f0462

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42238fca4c69988702048b011619e2087b5f2edbc5728ddab1be21d7d2640506",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-02-13T14:21:26Z",
    "title_canon_sha256": "6b1551c608edf39056bf6415d1a43dfb6ca9a8f8f19c91a3cdcecae3b8295639"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04913",
    "kind": "arxiv",
    "version": 1
  }
}