Pith Number

pith:G4FCMQLH

pith:2026:G4FCMQLHY7TK3LTB2ZBYUYZ3GU

not attested not anchored not stored refs pending

BUP-TR: Bayesian Underdetermined Projection Trust-Region Methods for Derivative-Free Optimization

Li Zhang, Pengcheng Xie, Wei Hu, Ya-Xiang Yuan

arxiv:2605.30841 v1 · 2026-05-29 · 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{G4FCMQLHY7TK3LTB2ZBYUYZ3GU}

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	2026-06-01T01:03:20.383919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

370a264167c7e6adae61d6438a633b353e3f502257f8737de5e2d12845719c1c

Aliases

arxiv: 2605.30841 · arxiv_version: 2605.30841v1 · doi: 10.48550/arxiv.2605.30841 · pith_short_12: G4FCMQLHY7TK · pith_short_16: G4FCMQLHY7TK3LTB · pith_short_8: G4FCMQLH

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/G4FCMQLHY7TK3LTB2ZBYUYZ3GU \
  | 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: 370a264167c7e6adae61d6438a633b353e3f502257f8737de5e2d12845719c1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07211695b12e67c574650d29d626e9dd09dda23e83deabfd09c77b7de540d20a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-05-29T04:59:09Z",
    "title_canon_sha256": "86d47fb916b04b1015a7b42a5b53d757a17fdd0c11e173c9b235881aab0219d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.30841",
    "kind": "arxiv",
    "version": 1
  }
}