Pith Number

pith:X34LSE6S

pith:2014:X34LSE6SVMZFGH5YK7ZECPCUUE

not attested not anchored not stored refs pending

Spectral Operators of Matrices

Chao Ding, Defeng Sun, Jie Sun, Kim-Chuan Toh

arxiv:1401.2269 v1 · 2014-01-10 · 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{X34LSE6SVMZFGH5YK7ZECPCUUE}

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	2026-05-18T03:02:45.838693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bef8b913d2ab32531fb857f2413c54a137baee8114f5dc25680892ae924c65e7

Aliases

arxiv: 1401.2269 · arxiv_version: 1401.2269v1 · doi: 10.48550/arxiv.1401.2269 · pith_short_12: X34LSE6SVMZF · pith_short_16: X34LSE6SVMZFGH5Y · pith_short_8: X34LSE6S

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/X34LSE6SVMZFGH5YK7ZECPCUUE \
  | 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: bef8b913d2ab32531fb857f2413c54a137baee8114f5dc25680892ae924c65e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebae2af440513edbb73dbdbf0e74f671ef00d584dca8bbfbf68f69be46f6a871",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-01-10T09:47:48Z",
    "title_canon_sha256": "accdf769779888f0f10dd554950cce8f0d9c28dd1d3966258c149899ffe74edf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2269",
    "kind": "arxiv",
    "version": 1
  }
}