Pith Number

pith:NZ6BYF5G

pith:2019:NZ6BYF5GCXSRWV6OVYIWNMH4P4

not attested not anchored not stored refs pending

Topology Optimization with Bilevel Knapsack: An Efficient 51 Lines MATLAB Code

Vittorio Latorre

arxiv:1902.00877 v1 · 2019-02-03 · 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{NZ6BYF5GCXSRWV6OVYIWNMH4P4}

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	2026-05-17T23:54:51.889861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e7c1c17a615e51b57ceae1166b0fc7f180f871c7b124fb73a93011fef0c754b

Aliases

arxiv: 1902.00877 · arxiv_version: 1902.00877v1 · doi: 10.48550/arxiv.1902.00877 · pith_short_12: NZ6BYF5GCXSR · pith_short_16: NZ6BYF5GCXSRWV6O · pith_short_8: NZ6BYF5G

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/NZ6BYF5GCXSRWV6OVYIWNMH4P4 \
  | 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: 6e7c1c17a615e51b57ceae1166b0fc7f180f871c7b124fb73a93011fef0c754b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67b300171102a26535f546f58421f9b87d531e8cfde1947c72719f711578ad24",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-02-03T10:55:47Z",
    "title_canon_sha256": "04ce2f7609f89187400fdce1d5d9dbd89497e8fcab56536f6cdb87a1e10428f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00877",
    "kind": "arxiv",
    "version": 1
  }
}