Pith Number

pith:TFWYRHZY

pith:2015:TFWYRHZYI4HIKYJTTVWBKCELHW

not attested not anchored not stored refs pending

Some Constructions for Amicable Orthogonal Designs

Ebrahim Ghaderpour

arxiv:1509.03627 v1 · 2015-09-11 · 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{TFWYRHZYI4HIKYJTTVWBKCELHW}

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	2026-05-18T01:33:14.991863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

996d889f38470e8561339d6c15088b3db8baf9c8715d3cb4ab75cf4a7006b233

Aliases

arxiv: 1509.03627 · arxiv_version: 1509.03627v1 · doi: 10.48550/arxiv.1509.03627 · pith_short_12: TFWYRHZYI4HI · pith_short_16: TFWYRHZYI4HIKYJT · pith_short_8: TFWYRHZY

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/TFWYRHZYI4HIKYJTTVWBKCELHW \
  | 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: 996d889f38470e8561339d6c15088b3db8baf9c8715d3cb4ab75cf4a7006b233

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd0a28f812be3c80e10d1f15f93457fbe42bf361ec2aa89d6a16e4427041eba0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-09-11T18:20:20Z",
    "title_canon_sha256": "ea21142d975991f607141b97f7268f6bc72d314534f1765c57d43f4caa5a7632"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03627",
    "kind": "arxiv",
    "version": 1
  }
}