Pith Number

pith:ILJMT2GY

pith:2009:ILJMT2GYFZEOXU3H24FSTZJQ47

not attested not anchored not stored refs pending

Simultaneously Sparse Solutions to Linear Inverse Problems with Multiple System Matrices and a Single Observation Vector

Adam C. Zelinski, Elfar Adalsteinsson, Vivek K Goyal

arxiv:0907.2083 v1 · 2009-07-13 · 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{ILJMT2GYFZEOXU3H24FSTZJQ47}

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	2026-05-18T04:41:35.044140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42d2c9e8d82e48ebd367d70b29e530e7c8e519ae8c0f524f424a3bc74500e882

Aliases

arxiv: 0907.2083 · arxiv_version: 0907.2083v1 · doi: 10.48550/arxiv.0907.2083 · pith_short_12: ILJMT2GYFZEO · pith_short_16: ILJMT2GYFZEOXU3H · pith_short_8: ILJMT2GY

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/ILJMT2GYFZEOXU3H24FSTZJQ47 \
  | 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: 42d2c9e8d82e48ebd367d70b29e530e7c8e519ae8c0f524f424a3bc74500e882

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f29fdc8f3032a6b9731d9ff6330f7180e2f2f3e495b95b80b603e64d9d05e745",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2009-07-13T01:38:06Z",
    "title_canon_sha256": "c1eca958368b673e86aec1781e27abd198f6b06f78192d0ebfe09a621da4e931"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2083",
    "kind": "arxiv",
    "version": 1
  }
}