Pith Number

pith:4SR7E3PU

pith:2014:4SR7E3PUVUJOZ5LI4XT35SSOR2

not attested not anchored not stored refs pending

Some remarks on a shape optimization problem

Francesco Della Pietra

arxiv:1403.5887 v1 · 2014-03-24 · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SR7E3PUVUJOZ5LI4XT35SSOR2}

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	2026-05-18T02:55:47.511885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4a3f26df4ad12ecf568e5e7beca4e8e9daf8daf8bab083a675d5ff292381ab6

Aliases

arxiv: 1403.5887 · arxiv_version: 1403.5887v1 · doi: 10.48550/arxiv.1403.5887 · pith_short_12: 4SR7E3PUVUJO · pith_short_16: 4SR7E3PUVUJOZ5LI · pith_short_8: 4SR7E3PU

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/4SR7E3PUVUJOZ5LI4XT35SSOR2 \
  | 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: e4a3f26df4ad12ecf568e5e7beca4e8e9daf8daf8bab083a675d5ff292381ab6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "198dc730dfee141246554b7cf4ce08338af55a9ebec060cd7363d82be0d62260",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-03-24T09:47:26Z",
    "title_canon_sha256": "2a74706e5b4c8a45a18005e478ff1ec143d52be5bd388c4ea16f1ae89221ca69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5887",
    "kind": "arxiv",
    "version": 1
  }
}