Pith Number

pith:SF6JJSQW

pith:2017:SF6JJSQWE3ETCJE5XMXRBHKZZH

not attested not anchored not stored refs pending

A Penalty Method for Rank Minimization Problems in Symmetric Matrices

John E. Mitchell, Xin Shen

arxiv:1701.03218 v2 · 2017-01-12 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SF6JJSQWE3ETCJE5XMXRBHKZZH}

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	2026-05-18T00:24:36.110387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

917c94ca1626c931249dbb2f109d59c9cf59209e6b29665b346b98787c012993

Aliases

arxiv: 1701.03218 · arxiv_version: 1701.03218v2 · doi: 10.48550/arxiv.1701.03218 · pith_short_12: SF6JJSQWE3ET · pith_short_16: SF6JJSQWE3ETCJE5 · pith_short_8: SF6JJSQW

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/SF6JJSQWE3ETCJE5XMXRBHKZZH \
  | 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: 917c94ca1626c931249dbb2f109d59c9cf59209e6b29665b346b98787c012993

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "526b3792b9a5ae9ce92866fd321f07669a11a090cb7d6cb0475e244e1af6a07f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-01-12T03:03:54Z",
    "title_canon_sha256": "003eefa06ca1bf2d019a6d5c87c0becb957b82d85d17368d3e963baa5d323fa9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.03218",
    "kind": "arxiv",
    "version": 2
  }
}