Pith Number

pith:IPFZM5U6

pith:2009:IPFZM5U6WH44CYNMCG6QONCKO7

not attested not anchored not stored refs pending

Very long-term X-ray variations in LMXBs: solar cycle-like variations in the donor?

M.M.Kotze, P.A.Charles

arxiv:0911.4188 v1 · 2009-11-21 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IPFZM5U6WH44CYNMCG6QONCKO7}

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	2026-05-18T02:10:37.816989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43cb96769eb1f9c161ac11bd07344a77fcd6f054087d0acd8aa45ef2005962bf

Aliases

arxiv: 0911.4188 · arxiv_version: 0911.4188v1 · doi: 10.48550/arxiv.0911.4188 · pith_short_12: IPFZM5U6WH44 · pith_short_16: IPFZM5U6WH44CYNM · pith_short_8: IPFZM5U6

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/IPFZM5U6WH44CYNMCG6QONCKO7 \
  | 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: 43cb96769eb1f9c161ac11bd07344a77fcd6f054087d0acd8aa45ef2005962bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c9febe9d82fa0e27ac3b806a55bddd62412600ed5b41d00f9116ec57a956de8",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-11-21T15:28:46Z",
    "title_canon_sha256": "b819400f289d6e3a649f8db42c59e0aef8db60ec44afe78a90972397a375eac1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4188",
    "kind": "arxiv",
    "version": 1
  }
}