Pith Number

pith:OOQCEDX2

pith:2018:OOQCEDX27J3DWZGSH5X6VAZFOX

not attested not anchored not stored refs pending

Efficient Calibration of Radio Interferometers Using Block LDU Decomposition

Ahmad Mouri Sardarabadi, Alle-Jan van der Veen, L\'eon V. E. Koopmans

arxiv:1803.05707 v2 · 2018-03-15 · 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{OOQCEDX27J3DWZGSH5X6VAZFOX}

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	2026-05-18T00:19:40.988645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73a0220efafa763b64d23f6fea832575fa1d34e54c9ea71679bb3684e1ce7e98

Aliases

arxiv: 1803.05707 · arxiv_version: 1803.05707v2 · doi: 10.48550/arxiv.1803.05707 · pith_short_12: OOQCEDX27J3D · pith_short_16: OOQCEDX27J3DWZGS · pith_short_8: OOQCEDX2

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/OOQCEDX27J3DWZGSH5X6VAZFOX \
  | 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: 73a0220efafa763b64d23f6fea832575fa1d34e54c9ea71679bb3684e1ce7e98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "132308f846127755c9abd6875ff1399952a0f375df207d52552593c440378364",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-03-15T12:21:32Z",
    "title_canon_sha256": "8d9d044c5d55ed94d64f6c20df8712a774f4e36139c99f4e2d50a2d907196a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05707",
    "kind": "arxiv",
    "version": 2
  }
}