Pith Number

pith:SQ6774HG

pith:2018:SQ6774HGQJWSRB6ZNXRHN5WJQC

not attested not anchored not stored refs pending

On the spectral characterization of mixed extensions of $P_3$

Hatice Topcu, Sezer Sorgun, Willem H. Haemers

arxiv:1810.12615 v2 · 2018-10-30 · 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{SQ6774HGQJWSRB6ZNXRHN5WJQC}

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	2026-05-17T23:40:08.880540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

943dfff0e6826d2887d96de276f6c980baf1271fe50c50f1a42cebeb660ca65f

Aliases

arxiv: 1810.12615 · arxiv_version: 1810.12615v2 · doi: 10.48550/arxiv.1810.12615 · pith_short_12: SQ6774HGQJWS · pith_short_16: SQ6774HGQJWSRB6Z · pith_short_8: SQ6774HG

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/SQ6774HGQJWSRB6ZNXRHN5WJQC \
  | 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: 943dfff0e6826d2887d96de276f6c980baf1271fe50c50f1a42cebeb660ca65f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93d7c5d78a500f583b1699c004972485d71cc460ca9f6480c65c9d7a6aaaec62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-10-30T09:55:48Z",
    "title_canon_sha256": "8bdfd4a1d2a784c43b363b97691c877337da9777136f42092166d358fe016356"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.12615",
    "kind": "arxiv",
    "version": 2
  }
}