Pith Number

pith:EQNPZZHR

pith:2015:EQNPZZHRSPRZDEC7N5SS2SYO4D

not attested not anchored not stored refs pending

A remark on the trigonometric system

Alexander Kushpel

arxiv:1506.01116 v1 · 2015-06-03 · math.CA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQNPZZHRSPRZDEC7N5SS2SYO4D}

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	2026-05-18T01:58:25.028906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

241afce4f193e391905f6f652d4b0ee0c97f8a3cf64f9c78b0165829f799e3a8

Aliases

arxiv: 1506.01116 · arxiv_version: 1506.01116v1 · doi: 10.48550/arxiv.1506.01116 · pith_short_12: EQNPZZHRSPRZ · pith_short_16: EQNPZZHRSPRZDEC7 · pith_short_8: EQNPZZHR

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/EQNPZZHRSPRZDEC7N5SS2SYO4D \
  | 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: 241afce4f193e391905f6f652d4b0ee0c97f8a3cf64f9c78b0165829f799e3a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2b036f31a6aff76af49b47f30312b3ba70ea309148855e30b59ab8a45264fed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2015-06-03T04:21:17Z",
    "title_canon_sha256": "7b47f462b5d55f3bfe02cb06c2e765d8c4b844d0310a00aa272af17f5e03df93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.01116",
    "kind": "arxiv",
    "version": 1
  }
}