Pith Number

pith:WRDHLZMZ

pith:2022:WRDHLZMZ5AJO4ZNOC43B4PJJ2B

not attested not anchored not stored refs pending

A Semi-blind PCA-based Foreground Subtraction Method for 21 cm Intensity Mapping

Shifan Zuo (Tsinghua), Xuelei Chen (NAOC), Yi Mao (Tsinghua)

arxiv:2208.14675 v2 · 2022-08-31 · astro-ph.CO · 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{WRDHLZMZ5AJO4ZNOC43B4PJJ2B}

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.

Cited by

2 papers in Pith

Primordial magnetic fields in the light of upcoming post-EoR Lyman-$\alpha$ and 21-cm observations

Neutrino self-interactions in post-reionization era: Lyman-$\alpha$, 21-cm and cross-spectra

Receipt and verification

First computed	2026-07-05T05:48:01.091360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b44675e599e812ee65ae17361e3d29d05183dc3605388b36ab8b4f11898afc60

Aliases

arxiv: 2208.14675 · arxiv_version: 2208.14675v2 · doi: 10.48550/arxiv.2208.14675 · pith_short_12: WRDHLZMZ5AJO · pith_short_16: WRDHLZMZ5AJO4ZNO · pith_short_8: WRDHLZMZ

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/WRDHLZMZ5AJO4ZNOC43B4PJJ2B \
  | 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: b44675e599e812ee65ae17361e3d29d05183dc3605388b36ab8b4f11898afc60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01c77fbf369a581d521ffe4f4928678a357bc41750a7f071366ac320db7eeaae",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-08-31T08:01:08Z",
    "title_canon_sha256": "114501fe04328b3939d5725dc05b54fe32d62a0393a649112808ea12d25a3bf8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.14675",
    "kind": "arxiv",
    "version": 2
  }
}