Pith Number

pith:SBBD3KLH

pith:2019:SBBD3KLHUH42VEORUONGDYVL5N

not attested not anchored not stored refs pending

Pairs of a tree and a nontree graph with the same status sequence

Pu Qiao, Xingzhi Zhan

arxiv:1901.09547 v1 · 2019-01-28 · 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{SBBD3KLHUH42VEORUONGDYVL5N}

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	2026-05-17T23:55:24.535341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90423da967a1f9aa91d1a39a61e2abeb6921f48bdd858517a0e20f18a847a14f

Aliases

arxiv: 1901.09547 · arxiv_version: 1901.09547v1 · doi: 10.48550/arxiv.1901.09547 · pith_short_12: SBBD3KLHUH42 · pith_short_16: SBBD3KLHUH42VEOR · pith_short_8: SBBD3KLH

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/SBBD3KLHUH42VEORUONGDYVL5N \
  | 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: 90423da967a1f9aa91d1a39a61e2abeb6921f48bdd858517a0e20f18a847a14f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae66400717bf23365bdb2a76f5786f51a8a280e2f5e8b548317c900fa3a0f2bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-01-28T08:29:24Z",
    "title_canon_sha256": "5a8957f4d79bb22b217394dd81ae228df6690a6d8ba9accb84232ba13f52b477"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09547",
    "kind": "arxiv",
    "version": 1
  }
}