Pith Number

pith:RQ3QDFPU

pith:2026:RQ3QDFPUBDPJW7BKTOYHYKT5W6

not attested not anchored not stored refs pending

Birkhoff interpolation models for optimization with some available derivatives

Evan Toler, Jeffrey Larson, Matt Menickelly

arxiv:2605.28503 v1 · 2026-05-27 · 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{RQ3QDFPUBDPJW7BKTOYHYKT5W6}

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	2026-05-28T02:04:54.802939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c370195f408de9b7c2a9bb07c2a7db78316bde9ceba567c40397b6c35812e41

Aliases

arxiv: 2605.28503 · arxiv_version: 2605.28503v1 · doi: 10.48550/arxiv.2605.28503 · pith_short_12: RQ3QDFPUBDPJ · pith_short_16: RQ3QDFPUBDPJW7BK · pith_short_8: RQ3QDFPU

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/RQ3QDFPUBDPJW7BKTOYHYKT5W6 \
  | 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: 8c370195f408de9b7c2a9bb07c2a7db78316bde9ceba567c40397b6c35812e41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18ff41343cd9f071edab702355ce08e76f6c8f89cd20ff05dc07fce9d2d73873",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-05-27T14:05:03Z",
    "title_canon_sha256": "37149f3a5d72e77250ac1878ec55e3934f0ceb314be5c1716629ca6e8d5da11d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28503",
    "kind": "arxiv",
    "version": 1
  }
}