Pith Number

pith:CZNXHLAM

pith:2009:CZNXHLAMJPSZHUOJAQK2BQZN4C

not attested not anchored not stored refs pending

Practical error estimates for sparse recovery in linear inverse problems

Caroline Verhoeven, Ignace Loris

arxiv:0908.3636 v2 · 2009-08-25 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CZNXHLAMJPSZHUOJAQK2BQZN4C}

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	2026-06-03T23:06:28.388773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

165b73ac0c4be593d1c90415a0c32de0b6b935e22522239df403ad8ff7e70ce5

Aliases

arxiv: 0908.3636 · arxiv_version: 0908.3636v2 · doi: 10.48550/arxiv.0908.3636 · pith_short_12: CZNXHLAMJPSZ · pith_short_16: CZNXHLAMJPSZHUOJ · pith_short_8: CZNXHLAM

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/CZNXHLAMJPSZHUOJAQK2BQZN4C \
  | 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: 165b73ac0c4be593d1c90415a0c32de0b6b935e22522239df403ad8ff7e70ce5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22dd73c4c0874b22476a19591dec06b684602c997fa455c6a80f342a5fad3f2a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-08-25T15:33:45Z",
    "title_canon_sha256": "aaada4985f466e6debd2fe122e3fc616168c880dbc23f1abaa40cf3ec61d97a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3636",
    "kind": "arxiv",
    "version": 2
  }
}