Pith Number

pith:MQWXEKZ6

pith:2011:MQWXEKZ6L3HYQOXQ7YWOAQWMLE

not attested not anchored not stored refs pending

Estimating the State of AC Power Systems using Semidefinite Programming

Georgios B. Giannakis, Hao Zhu

arxiv:1104.3117 v2 · 2011-04-15 · cs.SY · 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{MQWXEKZ6L3HYQOXQ7YWOAQWMLE}

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	2026-05-18T02:22:02.861587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

642d722b3e5ecf883af0fe2ce042cc592d910cd7efc89d3df88a15295e57717a

Aliases

arxiv: 1104.3117 · arxiv_version: 1104.3117v2 · doi: 10.48550/arxiv.1104.3117 · pith_short_12: MQWXEKZ6L3HY · pith_short_16: MQWXEKZ6L3HYQOXQ · pith_short_8: MQWXEKZ6

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/MQWXEKZ6L3HYQOXQ7YWOAQWMLE \
  | 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: 642d722b3e5ecf883af0fe2ce042cc592d910cd7efc89d3df88a15295e57717a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd9bfdd02faccd3dbc3e09f5805c037c822843c5cd5405c2c02c44543f074355",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2011-04-15T17:27:43Z",
    "title_canon_sha256": "e82e98c912f7831c1fbb9bcda15764527b9a5d72f96aa514004f23264140e490"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3117",
    "kind": "arxiv",
    "version": 2
  }
}