Pith Number

pith:COIJGU4G

pith:2017:COIJGU4GUAZ3DCEFPS7A742DYQ

not attested not anchored not stored refs pending

A short survey on QPSK Costas loop mathematical models

G.A. Leonov, M.V. Yuldashev, N.V. Kuznetsov, O.A. Kuznetsova, R.V. Yuldashev

arxiv:1705.02361 v1 · 2017-05-05 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COIJGU4GUAZ3DCEFPS7A742DYQ}

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	2026-05-18T00:44:56.804826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1390935386a033b188857cbe0ff343c423a041a8d778d59d0115fe02c9e22c16

Aliases

arxiv: 1705.02361 · arxiv_version: 1705.02361v1 · doi: 10.48550/arxiv.1705.02361 · pith_short_12: COIJGU4GUAZ3 · pith_short_16: COIJGU4GUAZ3DCEF · pith_short_8: COIJGU4G

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/COIJGU4GUAZ3DCEFPS7A742DYQ \
  | 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: 1390935386a033b188857cbe0ff343c423a041a8d778d59d0115fe02c9e22c16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9e0b6d5ed7a1bd69f863dfcec577dcab9437ba52a2ef8a7abb08843713a0a00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2017-05-05T18:45:16Z",
    "title_canon_sha256": "c573ffe2795cc76d5d86e285625f9ba4b245e9e2653cfcd2ec9f2b4bdf861283"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.02361",
    "kind": "arxiv",
    "version": 1
  }
}