Pith Number

pith:XOC7X64L

pith:2011:XOC7X64LLEM52DB6EOTPFZIMRT

not attested not anchored not stored refs pending

Acyclic and unicyclic graphs whose minimum skew rank is equal to the minimum skew rank of a diametrical path

Luz M. DeAlba

arxiv:1107.2170 v1 · 2011-07-12 · 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{XOC7X64LLEM52DB6EOTPFZIMRT}

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	2026-05-18T04:18:25.118859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb85fbfb8b5919dd0c3e23a6f2e50c8cfbc5883cf4cacfa7cc5dc260f85e2c85

Aliases

arxiv: 1107.2170 · arxiv_version: 1107.2170v1 · doi: 10.48550/arxiv.1107.2170 · pith_short_12: XOC7X64LLEM5 · pith_short_16: XOC7X64LLEM52DB6 · pith_short_8: XOC7X64L

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/XOC7X64LLEM52DB6EOTPFZIMRT \
  | 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: bb85fbfb8b5919dd0c3e23a6f2e50c8cfbc5883cf4cacfa7cc5dc260f85e2c85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36db838f40fd67f20d249c112567227213f32732b48be1c71a2a62273db59aa1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-07-12T00:24:10Z",
    "title_canon_sha256": "e290fbac435d11b6b946769b7924ba9715026142681e154e67b00bf988bf3a35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2170",
    "kind": "arxiv",
    "version": 1
  }
}