Pith Number

pith:RMR6CZQV

pith:2014:RMR6CZQVGFX7GKV3HYH7IL4T4N

not attested not anchored not stored refs pending

A two-fold cover of strongly regular graphs with spreads and association schemes of class five

Sho Suda

arxiv:1405.2624 v1 · 2014-05-12 · 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{RMR6CZQVGFX7GKV3HYH7IL4T4N}

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	2026-05-18T02:52:05.096291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b23e16615316ff32abb3e0ff42f93e37b16dca039c984ce0c9c7031fa8a5524

Aliases

arxiv: 1405.2624 · arxiv_version: 1405.2624v1 · doi: 10.48550/arxiv.1405.2624 · pith_short_12: RMR6CZQVGFX7 · pith_short_16: RMR6CZQVGFX7GKV3 · pith_short_8: RMR6CZQV

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/RMR6CZQVGFX7GKV3HYH7IL4T4N \
  | 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: 8b23e16615316ff32abb3e0ff42f93e37b16dca039c984ce0c9c7031fa8a5524

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0f21f6b5aafcf907d7eb610c359dc514f5e54e90568efafa63fb8575c423c12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-05-12T03:36:20Z",
    "title_canon_sha256": "ec9637dae4e5b6a0712ae20d858b4890403056242596fa7c9871d7d216be47c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.2624",
    "kind": "arxiv",
    "version": 1
  }
}