Pith Number

pith:XCAQVB22

pith:2013:XCAQVB22GME4OC4EL3ZRFI3DOM

not attested not anchored not stored refs pending

Conic geometric optimisation on the manifold of positive definite matrices

Reshad Hosseini, Suvrit Sra

arxiv:1312.1039 v3 · 2013-12-04 · math.FA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XCAQVB22GME4OC4EL3ZRFI3DOM}

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	2026-05-18T00:14:29.421421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8810a875a3309c70b845ef312a363731a75254e6fedce55f5091dad73b8899b

Aliases

arxiv: 1312.1039 · arxiv_version: 1312.1039v3 · doi: 10.48550/arxiv.1312.1039 · pith_short_12: XCAQVB22GME4 · pith_short_16: XCAQVB22GME4OC4E · pith_short_8: XCAQVB22

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/XCAQVB22GME4OC4EL3ZRFI3DOM \
  | 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: b8810a875a3309c70b845ef312a363731a75254e6fedce55f5091dad73b8899b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34bf3491dd78bd27bffca6fc290f040eb915023675dad010d745177bd34a97c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2013-12-04T06:26:06Z",
    "title_canon_sha256": "324a43202417e11e79445baf48912f2563809c06963449928f48e00d1a994b6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1039",
    "kind": "arxiv",
    "version": 3
  }
}