Pith Number

pith:AMNS7NSP

pith:2022:AMNS7NSPHEAN2B4HLI4ATOPD6I

not attested not anchored not stored refs pending

Polynomial Preconditioners for Regularized Linear Inverse Problems

Congyu Liao, Frank Ong, Jonathan I. Tamir, Kawin Setsompop, Luca Daniel, Siddharth Srinivasan Iyer, Xiaozhi Cao

arxiv:2204.10252 v3 · 2022-04-21 · physics.med-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AMNS7NSPHEAN2B4HLI4ATOPD6I}

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	2026-07-05T05:00:41.738904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

031b2fb64f3900dd07875a3809b9e3f20f78f70b286b76837772df4c47c77cab

Aliases

arxiv: 2204.10252 · arxiv_version: 2204.10252v3 · doi: 10.48550/arxiv.2204.10252 · pith_short_12: AMNS7NSPHEAN · pith_short_16: AMNS7NSPHEAN2B4H · pith_short_8: AMNS7NSP

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/AMNS7NSPHEAN2B4HLI4ATOPD6I \
  | 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: 031b2fb64f3900dd07875a3809b9e3f20f78f70b286b76837772df4c47c77cab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4864e74a814e18acaa7658206f5162d858a5c2d82eee2106f2d576659a96da1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2022-04-21T16:38:41Z",
    "title_canon_sha256": "bfd6b4fdbd9161cc517c00c4642349e68338ca3eea4293aab10d79566b09f052"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.10252",
    "kind": "arxiv",
    "version": 3
  }
}