Pith Number

pith:P4UXV63L

pith:2017:P4UXV63LV6MIGP6ENRH2AEYJOQ

not attested not anchored not stored refs pending

A convex analysis approach to multi-material topology optimization

Christian Clason, Karl Kunisch

arxiv:1702.07525 v1 · 2017-02-24 · 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{P4UXV63LV6MIGP6ENRH2AEYJOQ}

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	2026-05-18T00:50:03.037160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f297afb6baf98833fc46c4fa0130974347a2eb2a5cb032dddec2628614061a3

Aliases

arxiv: 1702.07525 · arxiv_version: 1702.07525v1 · doi: 10.48550/arxiv.1702.07525 · pith_short_12: P4UXV63LV6MI · pith_short_16: P4UXV63LV6MIGP6E · pith_short_8: P4UXV63L

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/P4UXV63LV6MIGP6ENRH2AEYJOQ \
  | 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: 7f297afb6baf98833fc46c4fa0130974347a2eb2a5cb032dddec2628614061a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "143dcbe79ab576e92f24165f5748c86c3d8d10ea27e5eeca1850f30257fe72f5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-02-24T10:21:56Z",
    "title_canon_sha256": "f8dd9dbee9873065d46e84e2d6fbd38e6e1a24ecfe8dc489ddb3057489da48b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.07525",
    "kind": "arxiv",
    "version": 1
  }
}