Pith Number

pith:4MCKNVZV

pith:2019:4MCKNVZVAZPC7BVQWLWC2YV2ZP

not attested not anchored not stored refs pending

Optimizing certain combinations of spectral and linear$/$distance functions over spectral sets

M. Seetharama Gowda

arxiv:1902.06640 v2 · 2019-02-18 · 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{4MCKNVZVAZPC7BVQWLWC2YV2ZP}

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	2026-05-17T23:51:46.579457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e304a6d735065e2f86b0b2ec2d62bacbdcff5d5076b3dc81cd8587b52a390937

Aliases

arxiv: 1902.06640 · arxiv_version: 1902.06640v2 · doi: 10.48550/arxiv.1902.06640 · pith_short_12: 4MCKNVZVAZPC · pith_short_16: 4MCKNVZVAZPC7BVQ · pith_short_8: 4MCKNVZV

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/4MCKNVZVAZPC7BVQWLWC2YV2ZP \
  | 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: e304a6d735065e2f86b0b2ec2d62bacbdcff5d5076b3dc81cd8587b52a390937

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59135e1855c585cdfdfc9688d644b434f1430d6c5e97b3b3568ce2cee4e8272d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-02-18T16:40:55Z",
    "title_canon_sha256": "b018a9924ecca2a53799e7363c80c50b23a771af57df9c1f388fc779e9987408"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06640",
    "kind": "arxiv",
    "version": 2
  }
}