Pith Number

pith:F5Q2JVAX

pith:2013:F5Q2JVAXDEPQXJFK6BKQRXQLS6

not attested not anchored not stored refs pending

The varying w spread spectrum effect for radio interferometric imaging

Filipe B. Abdalla, Jason D. McEwen, Laura Wolz, Rafael E. Carrillo, Yves Wiaux

arxiv:1301.7259 v1 · 2013-01-30 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F5Q2JVAXDEPQXJFK6BKQRXQLS6}

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	2026-05-18T03:35:00.814046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f61a4d417191f0ba4aaf05508de0b9783e2106788df7872449c377d87fbfe48

Aliases

arxiv: 1301.7259 · arxiv_version: 1301.7259v1 · doi: 10.48550/arxiv.1301.7259 · pith_short_12: F5Q2JVAXDEPQ · pith_short_16: F5Q2JVAXDEPQXJFK · pith_short_8: F5Q2JVAX

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/F5Q2JVAXDEPQXJFK6BKQRXQLS6 \
  | 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: 2f61a4d417191f0ba4aaf05508de0b9783e2106788df7872449c377d87fbfe48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe20a0d72599b3b8219a2001cb153eb0fffc9480c5dfdb66fd1c24faccb33f2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-01-30T15:37:22Z",
    "title_canon_sha256": "1f130b5f5b79680dc55ab27297055cb0686f1e3b6662f0d823abef583aaafcb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.7259",
    "kind": "arxiv",
    "version": 1
  }
}