Pith Number

pith:C355DBD6

pith:2015:C355DBD6TIMAFB7LJBY2TEWZ3V

not attested not anchored not stored refs pending

Radio interferometric gain calibration as a complex optimization problem

Cyril Tasse, Oleg Smirnov

arxiv:1502.06974 v1 · 2015-02-24 · 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{C355DBD6TIMAFB7LJBY2TEWZ3V}

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	2026-05-18T02:26:10.065145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16fbd1847e9a180287eb4871a992d9dd5706fb10936673816277e35369a661ea

Aliases

arxiv: 1502.06974 · arxiv_version: 1502.06974v1 · doi: 10.48550/arxiv.1502.06974 · pith_short_12: C355DBD6TIMA · pith_short_16: C355DBD6TIMAFB7L · pith_short_8: C355DBD6

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/C355DBD6TIMAFB7LJBY2TEWZ3V \
  | 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: 16fbd1847e9a180287eb4871a992d9dd5706fb10936673816277e35369a661ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "004fcf7031bdfc76f9f627ac5be05b5ebd432f54eb9c04818a938c27a3f0f2b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-02-24T21:02:41Z",
    "title_canon_sha256": "c15347664fccf9c657ce95165cff8b3830b5ee679b233d88ca8c64fdf0be73f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.06974",
    "kind": "arxiv",
    "version": 1
  }
}