Pith Number

pith:VPODAFRE

pith:2019:VPODAFREARGLZ3IOLOZWUSU3YA

not attested not anchored not stored refs pending

On the numerical solution of a time-dependent shape optimization problem for the heat equation

Helmut Harbrecht, Johannes Tausch, Rahel Br\"ugger

arxiv:1906.06221 v1 · 2019-06-14 · 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{VPODAFREARGLZ3IOLOZWUSU3YA}

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	2026-05-17T23:43:19.297073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abdc301624044cbced0e5bb36a4a9bc01b1d8d3804f8681f387f3d6f892b5503

Aliases

arxiv: 1906.06221 · arxiv_version: 1906.06221v1 · doi: 10.48550/arxiv.1906.06221 · pith_short_12: VPODAFREARGL · pith_short_16: VPODAFREARGLZ3IO · pith_short_8: VPODAFRE

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/VPODAFREARGLZ3IOLOZWUSU3YA \
  | 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: abdc301624044cbced0e5bb36a4a9bc01b1d8d3804f8681f387f3d6f892b5503

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e60828d414c6658343d1b590d03a9ec23eb1ed81f415a9a4f19b804b34f8fe4d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-06-14T14:23:07Z",
    "title_canon_sha256": "74dbd907e582d91fbeba22d25571eb0b166226f80d73595074f1a72a6d747503"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06221",
    "kind": "arxiv",
    "version": 1
  }
}