Pith Number

pith:4QNBDNGY

pith:2014:4QNBDNGY6FXBMWUSHNHDY5XRMA

not attested not anchored not stored refs pending

On the dimension of posets with cover graphs of treewidth $2$

Gwena\"el Joret, Piotr Micek, Ruidong Wang, Veit Wiechert, William T. Trotter

arxiv:1406.3397 v4 · 2014-06-13 · 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{4QNBDNGY6FXBMWUSHNHDY5XRMA}

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	2026-05-18T01:15:39.045202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e41a11b4d8f16e165a923b4e3c76f160037e06a03c2b261d9b545ff34004fcad

Aliases

arxiv: 1406.3397 · arxiv_version: 1406.3397v4 · doi: 10.48550/arxiv.1406.3397 · pith_short_12: 4QNBDNGY6FXB · pith_short_16: 4QNBDNGY6FXBMWUS · pith_short_8: 4QNBDNGY

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/4QNBDNGY6FXBMWUSHNHDY5XRMA \
  | 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: e41a11b4d8f16e165a923b4e3c76f160037e06a03c2b261d9b545ff34004fcad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1f78fa4a665dcc9929189dd18dc8699f31648f77766fb7da996884254574dd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-06-13T01:03:56Z",
    "title_canon_sha256": "b6515ab1ad5a8ba534e6fdd4a32cc6becaf9408ebd64cb2d276351630a2ecc93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.3397",
    "kind": "arxiv",
    "version": 4
  }
}