Pith Number

pith:WEIMVBJB

pith:2020:WEIMVBJB7R3JAJJA3EEW2TRZMI

not attested not anchored not stored refs pending

An optimal insulation problem

Carlo Nitsch, Cristina Trombetti, Francesco Della Pietra

arxiv:2005.11934 v2 · 2020-05-25 · math.AP · 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{WEIMVBJB7R3JAJJA3EEW2TRZMI}

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	2026-07-05T02:44:02.632536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b110ca8521fc76902520d9096d4e396206d8747bff8986122c96f2039f514781

Aliases

arxiv: 2005.11934 · arxiv_version: 2005.11934v2 · doi: 10.48550/arxiv.2005.11934 · pith_short_12: WEIMVBJB7R3J · pith_short_16: WEIMVBJB7R3JAJJA · pith_short_8: WEIMVBJB

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/WEIMVBJB7R3JAJJA3EEW2TRZMI \
  | 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: b110ca8521fc76902520d9096d4e396206d8747bff8986122c96f2039f514781

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb2cd149a036e7c75387d3d755fe701e0eecb40811c2885fde8f8b5383f19d59",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2020-05-25T05:54:44Z",
    "title_canon_sha256": "b7459749db7aa09c63803c361c64ad6648b9aacf604481b40953f4c976f212d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.11934",
    "kind": "arxiv",
    "version": 2
  }
}