Pith Number

pith:TUF3VQIC

pith:2015:TUF3VQICABY3ZTEXZJCWXULYER

not attested not anchored not stored refs pending

Structured inverse least-squares problem for structured matrices

Bibhas Adhikari, Rafikul Alam

arxiv:1501.02353 v1 · 2015-01-10 · math.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{TUF3VQICABY3ZTEXZJCWXULYER}

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	2026-05-18T01:01:01.960164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d0bbac1020071bccc97ca456bd178247578e672153ca59328a9fc7d1ddda0ba

Aliases

arxiv: 1501.02353 · arxiv_version: 1501.02353v1 · doi: 10.48550/arxiv.1501.02353 · pith_short_12: TUF3VQICABY3 · pith_short_16: TUF3VQICABY3ZTEX · pith_short_8: TUF3VQIC

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/TUF3VQICABY3ZTEXZJCWXULYER \
  | 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: 9d0bbac1020071bccc97ca456bd178247578e672153ca59328a9fc7d1ddda0ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdc2e7eac15e187d79b4651b7eb59207e32a20d3c31539cb67bd1ff5ca2362f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-01-10T13:33:09Z",
    "title_canon_sha256": "e742fcbdd6dcabe79b27029da075fb154fc55ef609c1e24304611c4cfd18d834"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02353",
    "kind": "arxiv",
    "version": 1
  }
}