Pith Number

pith:QB2BTS57

pith:2016:QB2BTS57B3FJ2RMSS5IWELB4CT

not attested not anchored not stored refs pending

Some non-existence and asymptotic existence results for weighing matrices

Ebrahim Ghaderpour

arxiv:1602.07794 v1 · 2016-02-23 · 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{QB2BTS57B3FJ2RMSS5IWELB4CT}

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	2026-05-18T01:19:58.571456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

807419cbbf0eca9d45929751622c3c14cbbf62c5a10a11db8fdd200ebfbee542

Aliases

arxiv: 1602.07794 · arxiv_version: 1602.07794v1 · doi: 10.48550/arxiv.1602.07794 · pith_short_12: QB2BTS57B3FJ · pith_short_16: QB2BTS57B3FJ2RMS · pith_short_8: QB2BTS57

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/QB2BTS57B3FJ2RMSS5IWELB4CT \
  | 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: 807419cbbf0eca9d45929751622c3c14cbbf62c5a10a11db8fdd200ebfbee542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "260d5772a1b4276c3627808c4ba3157da740d31df554b724e5d9c2f3d41476ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-02-23T18:22:11Z",
    "title_canon_sha256": "094e24c9b0ae661487587e74a00feb42d6158eb7546a423a309b4b099b6f39d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.07794",
    "kind": "arxiv",
    "version": 1
  }
}