Pith Number

pith:Q7PEOF7N

pith:2011:Q7PEOF7NVMUANU4E4KKCJOTYIK

not attested not anchored not stored refs pending

Robust Topology Optimization of Truss with regard to Volume

Christina A. Knapek (3) ((1) Institute of Mathematics, Computer Applications, Daniel P. Mohr, Department of Aerospace Engineering, Garching, Germany.), Germany. (2) Institute of Lightweight Structures, Germany. (3) Max-Planck-Institut f\"ur extraterrestrische Physik, Ina Stein (1), Neubiberg, Thomas Matzies (2), Universit\"at der Bundeswehr M\"unchen

arxiv:1109.3782 v2 · 2011-09-17 · math.OC · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q7PEOF7NVMUANU4E4KKCJOTYIK}

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	2026-05-18T03:56:45.087301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87de4717edab2806d384e29424ba7842a8674516d6bc394576314759236d7666

Aliases

arxiv: 1109.3782 · arxiv_version: 1109.3782v2 · doi: 10.48550/arxiv.1109.3782 · pith_short_12: Q7PEOF7NVMUA · pith_short_16: Q7PEOF7NVMUANU4E · pith_short_8: Q7PEOF7N

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/Q7PEOF7NVMUANU4E4KKCJOTYIK \
  | 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: 87de4717edab2806d384e29424ba7842a8674516d6bc394576314759236d7666

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6678eab6ea13617efc6f2369dfcf7860344e7bf11ee6ee58c99f44ccd49fb469",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2011-09-17T14:05:36Z",
    "title_canon_sha256": "ba28fef4f82a121fd8d6d9fa4be3e7d3cb2f0a34761ebd6e75d553af3e6cf4a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3782",
    "kind": "arxiv",
    "version": 2
  }
}