Pith Number

pith:XCFSQFUC

pith:2017:XCFSQFUCMQSI3LV7KPCSMRK2Q6

not attested not anchored not stored refs pending

A fast finite-difference algorithm for topology optimization of permanent magnets

Christian Huber, Christoph Vogler, Claas Abert, Dieter Suess, Florian Bruckner, Gregor Wautischer

arxiv:1707.09898 v1 · 2017-07-31 · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XCFSQFUCMQSI3LV7KPCSMRK2Q6}

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	2026-05-18T00:33:16.093263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b88b28168264248daebf53c526455a878c1d74e6720f17aafa43b0bdbbdac110

Aliases

arxiv: 1707.09898 · arxiv_version: 1707.09898v1 · doi: 10.48550/arxiv.1707.09898 · pith_short_12: XCFSQFUCMQSI · pith_short_16: XCFSQFUCMQSI3LV7 · pith_short_8: XCFSQFUC

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/XCFSQFUCMQSI3LV7KPCSMRK2Q6 \
  | 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: b88b28168264248daebf53c526455a878c1d74e6720f17aafa43b0bdbbdac110

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "232226b549bd7994227f28a1b98f210f9742e1a94505fa81c7cb7f0bfe894e1c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2017-07-31T14:51:41Z",
    "title_canon_sha256": "87830880b182ad3b890bcd188bfaadcc2f47ec5bf116dd91b4741dc14a0d203f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09898",
    "kind": "arxiv",
    "version": 1
  }
}