Pith Number

pith:PYQLPU2G

pith:2019:PYQLPU2GVTD6LZ457R2GHLWGBE

not attested not anchored not stored refs pending

A comparison of first-order methods for the numerical solution of or-constrained optimization problems

Patrick Mehlitz

arxiv:1905.01893 v1 · 2019-05-06 · 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{PYQLPU2GVTD6LZ457R2GHLWGBE}

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	2026-05-17T23:46:57.072995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e20b7d346acc7e5e79dfc7463aec6091255adb1f0c1a42c3a280d1169c26fb5

Aliases

arxiv: 1905.01893 · arxiv_version: 1905.01893v1 · doi: 10.48550/arxiv.1905.01893 · pith_short_12: PYQLPU2GVTD6 · pith_short_16: PYQLPU2GVTD6LZ45 · pith_short_8: PYQLPU2G

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/PYQLPU2GVTD6LZ457R2GHLWGBE \
  | 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: 7e20b7d346acc7e5e79dfc7463aec6091255adb1f0c1a42c3a280d1169c26fb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dcbc9ddb03021b33388138202bb3cf1694f0d90dd28b84c3b6ae824fa225c18",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-05-06T09:19:22Z",
    "title_canon_sha256": "8027c51c1eda0c793e6eedc4974580af4ba64594da37a5f99d61867a21bed994"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.01893",
    "kind": "arxiv",
    "version": 1
  }
}