Pith Number

pith:3IWQA6B3

pith:2013:3IWQA6B37NYKWBV6P3F5GCNT4T

not attested not anchored not stored refs pending

A Support Based Algorithm for Optimization with Eigenvalue Constraints

Emre Mengi

arxiv:1310.1563 v1 · 2013-10-06 · 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{3IWQA6B37NYKWBV6P3F5GCNT4T}

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	2026-05-18T03:11:11.520933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da2d00783bfb70ab06be7ecbd309b3e4ce9a04e3a685ff7680fa9ca0263e99f5

Aliases

arxiv: 1310.1563 · arxiv_version: 1310.1563v1 · doi: 10.48550/arxiv.1310.1563 · pith_short_12: 3IWQA6B37NYK · pith_short_16: 3IWQA6B37NYKWBV6 · pith_short_8: 3IWQA6B3

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/3IWQA6B37NYKWBV6P3F5GCNT4T \
  | 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: da2d00783bfb70ab06be7ecbd309b3e4ce9a04e3a685ff7680fa9ca0263e99f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29576218318e5e4f9c106cecc3a5ec447ada9e57d3a3c5a9c6d2d886d99cd9cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-10-06T09:38:58Z",
    "title_canon_sha256": "70cbe163c41c010d2ee9c547a933890009617b6bbeaac9a32441b437622e9b46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1563",
    "kind": "arxiv",
    "version": 1
  }
}