Pith Number

pith:WLDVEB5Y

pith:2012:WLDVEB5Y74O4DKCEMPBVTXA4H4

not attested not anchored not stored refs pending

A note on Fiedler value of classes with sublinear separators

Jaroslav Nesetril (IUUK), Patrice Ossona De Mendez (CAMS)

arxiv:1208.3581 v1 · 2012-08-17 · 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{WLDVEB5Y74O4DKCEMPBVTXA4H4}

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	2026-05-18T03:48:34.824004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2c75207b8ff1dc1a84463c359dc1c3f29e4815b320f715b668b14599a67e037

Aliases

arxiv: 1208.3581 · arxiv_version: 1208.3581v1 · doi: 10.48550/arxiv.1208.3581 · pith_short_12: WLDVEB5Y74O4 · pith_short_16: WLDVEB5Y74O4DKCE · pith_short_8: WLDVEB5Y

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/WLDVEB5Y74O4DKCEMPBVTXA4H4 \
  | 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: b2c75207b8ff1dc1a84463c359dc1c3f29e4815b320f715b668b14599a67e037

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fd723c072a7eb46db3bb529a7a13810e8933a34e335af578055b0ff1ddbd101",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-08-17T12:03:46Z",
    "title_canon_sha256": "7b71aadf9f250e9ffc939ccc8eb2ef4f8dfab86ccff0f3b1c38c2c58fe4fcbde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3581",
    "kind": "arxiv",
    "version": 1
  }
}