Pith Number

pith:7NTACYMM

pith:2017:7NTACYMMTLJPS5NZFBPH7PMTAB

not attested not anchored not stored refs pending

On Gallai's conjecture for series-parallel graphs and planar 3-trees

Andr\'e Schulz, Lena Schlipf, Philipp Kindermann

arxiv:1706.04130 v1 · 2017-06-13 · math.CO · 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{7NTACYMMTLJPS5NZFBPH7PMTAB}

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	2026-05-18T00:42:24.443550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb6601618c9ad2f975b9285e7fbd93006538c96d2ef5002b4599d11757a12953

Aliases

arxiv: 1706.04130 · arxiv_version: 1706.04130v1 · doi: 10.48550/arxiv.1706.04130 · pith_short_12: 7NTACYMMTLJP · pith_short_16: 7NTACYMMTLJPS5NZ · pith_short_8: 7NTACYMM

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/7NTACYMMTLJPS5NZFBPH7PMTAB \
  | 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: fb6601618c9ad2f975b9285e7fbd93006538c96d2ef5002b4599d11757a12953

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bba1ec57ea0695b69125ae7107b47450dfddd877e9d4f21f14651e7c6caca34e",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-06-13T15:36:20Z",
    "title_canon_sha256": "a5f994cb16cfce04d045c8fc537aa414a5e40d4b1d1984479215da97f0b09527"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.04130",
    "kind": "arxiv",
    "version": 1
  }
}