Pith Number

pith:MSCGIF4M

pith:2014:MSCGIF4MXZVH65EYIBQW4SFFZR

not attested not anchored not stored refs pending

On split graphs with four distinct eigenvalues

Ambat Vijayakumar, Anu Varghese, Felix Goldberg, Steve Kirkland

arxiv:1405.3441 v1 · 2014-05-14 · 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{MSCGIF4MXZVH65EYIBQW4SFFZR}

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	2026-05-18T02:51:50.780374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

648464178cbe6a7f749840616e48a5cc5b32d85345096534ef812cccc9eb36e9

Aliases

arxiv: 1405.3441 · arxiv_version: 1405.3441v1 · doi: 10.48550/arxiv.1405.3441 · pith_short_12: MSCGIF4MXZVH · pith_short_16: MSCGIF4MXZVH65EY · pith_short_8: MSCGIF4M

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/MSCGIF4MXZVH65EYIBQW4SFFZR \
  | 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: 648464178cbe6a7f749840616e48a5cc5b32d85345096534ef812cccc9eb36e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a97dc1c279a27a2a602ce367910cb1ff4e0496cc63c86d12042e7a3c010a34eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-05-14T10:23:59Z",
    "title_canon_sha256": "020169fb3b5b0d045a14e7f45dcff40169e49689e680d89e708559862b77c556"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.3441",
    "kind": "arxiv",
    "version": 1
  }
}