Pith Number

pith:DTAHL2IL

pith:2019:DTAHL2IL3SNH26GPZRJFCU3RCQ

not attested not anchored not stored refs pending

Minimum Variance Solution of Underdetermined Systems of Linear Equations

Davide Elia, Lorenzo Piazzo, Sergio Molinari

arxiv:1906.09121 v1 · 2019-06-21 · math.OC · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DTAHL2IL3SNH26GPZRJFCU3RCQ}

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	2026-05-17T23:42:44.446212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cc075e90bdc9a7d78cfcc52515371142365eea31aeefc51ec654dc87ce2f70a

Aliases

arxiv: 1906.09121 · arxiv_version: 1906.09121v1 · doi: 10.48550/arxiv.1906.09121 · pith_short_12: DTAHL2IL3SNH · pith_short_16: DTAHL2IL3SNH26GP · pith_short_8: DTAHL2IL

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/DTAHL2IL3SNH26GPZRJFCU3RCQ \
  | 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: 1cc075e90bdc9a7d78cfcc52515371142365eea31aeefc51ec654dc87ce2f70a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7635229027b1a592536d4fd896e643d341682e94077ff15946d0a960e5d7755d",
    "cross_cats_sorted": [
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-06-21T14:05:23Z",
    "title_canon_sha256": "c96ddc5a217180eb63cb660b11210969417cd692a05a1450a74a7e18a062d20a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.09121",
    "kind": "arxiv",
    "version": 1
  }
}