Pith Number

pith:YLTZSAJV

pith:2018:YLTZSAJVXCAZLVRCKJYKUIBQPS

not attested not anchored not stored refs pending

Algebraically grid-like graphs have large tree-width

Daniel Wei{\ss}auer

arxiv:1802.05158 v1 · 2018-02-14 · 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{YLTZSAJVXCAZLVRCKJYKUIBQPS}

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	2026-05-18T00:23:20.230921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2e7990135b88195d6225270aa20307ca0ec1086e44d1dcf79f9596a251fe68b

Aliases

arxiv: 1802.05158 · arxiv_version: 1802.05158v1 · doi: 10.48550/arxiv.1802.05158 · pith_short_12: YLTZSAJVXCAZ · pith_short_16: YLTZSAJVXCAZLVRC · pith_short_8: YLTZSAJV

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/YLTZSAJVXCAZLVRCKJYKUIBQPS \
  | 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: c2e7990135b88195d6225270aa20307ca0ec1086e44d1dcf79f9596a251fe68b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66494dbef7cbebc8fb0454ee9e3120be400753ff6c226a6070368efe031b3366",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-02-14T15:31:42Z",
    "title_canon_sha256": "b5c73f7933bd913ca64cc7f5e26e126f07ea66054c225fe6c798392b4b6b791a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05158",
    "kind": "arxiv",
    "version": 1
  }
}