Pith Number

pith:TOXS5OAR

pith:2017:TOXS5OARSS646PA32IJJ25SPO2

not attested not anchored not stored refs pending

Semidefinite approximations of the matrix logarithm

Hamza Fawzi, James Saunderson, Pablo A. Parrilo

arxiv:1705.00812 v2 · 2017-05-02 · 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{TOXS5OARSS646PA32IJJ25SPO2}

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	2026-07-05T00:24:01.913786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9baf2eb81194bdcf3c1bd2129d764f76a1c68f69a7ee8a2a3add2a0c6bfcc9d7

Aliases

arxiv: 1705.00812 · arxiv_version: 1705.00812v2 · doi: 10.48550/arxiv.1705.00812 · pith_short_12: TOXS5OARSS64 · pith_short_16: TOXS5OARSS646PA3 · pith_short_8: TOXS5OAR

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/TOXS5OARSS646PA32IJJ25SPO2 \
  | 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: 9baf2eb81194bdcf3c1bd2129d764f76a1c68f69a7ee8a2a3add2a0c6bfcc9d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "964971adf6e72caf4ccc6f169d5168748689f3e90c777d6c7dfa99179a9aeff6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-05-02T06:29:11Z",
    "title_canon_sha256": "4972c5679a86176c6850d193df0328fdfb8cdc3911b984b935d64639fcd0fcc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.00812",
    "kind": "arxiv",
    "version": 2
  }
}