Pith Number

pith:SYPBDQEE

pith:2018:SYPBDQEEVZPHKPJXNB4XKLZHC6

not attested not anchored not stored refs pending

Two curve Chebyshev approximation and its application to signal clustering

Nadezda Sukhorukova

arxiv:1807.11701 v1 · 2018-07-31 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SYPBDQEEVZPHKPJXNB4XKLZHC6}

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	2026-05-18T00:09:21.340595Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

961e11c084ae5e753d376879752f27178d68ea7d9701559d6b26d3af5355b656

Aliases

arxiv: 1807.11701 · arxiv_version: 1807.11701v1 · doi: 10.48550/arxiv.1807.11701 · pith_short_12: SYPBDQEEVZPH · pith_short_16: SYPBDQEEVZPHKPJX · pith_short_8: SYPBDQEE

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/SYPBDQEEVZPHKPJXNB4XKLZHC6 \
  | 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: 961e11c084ae5e753d376879752f27178d68ea7d9701559d6b26d3af5355b656

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82be7425ca57d69a786b9ebe677603d97954223099867e2371da16177e3e7ebc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-07-31T08:27:04Z",
    "title_canon_sha256": "c7b71233c3e10994f867f1fc3d0f604e75dfa681928228c8ddfde24b60e37884"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.11701",
    "kind": "arxiv",
    "version": 1
  }
}