Pith Number

pith:PGPKLCWB

pith:2015:PGPKLCWB3LOGFGFTSQZSPWQFHS

not attested not anchored not stored refs pending

Optimization approach for the simultaneous reconstruction of the dielectric permittivity and magnetic permeability functions from limited observations

Kati Niinim\"aki, Larisa Beilina, Michel Cristofol

arxiv:1512.00675 v1 · 2015-12-02 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PGPKLCWB3LOGFGFTSQZSPWQFHS}

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	2026-05-18T01:25:25.401731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

799ea58ac1dadc6298b3943327da053ca3981f5ccd0431c7942ab577858a361a

Aliases

arxiv: 1512.00675 · arxiv_version: 1512.00675v1 · doi: 10.48550/arxiv.1512.00675 · pith_short_12: PGPKLCWB3LOG · pith_short_16: PGPKLCWB3LOGFGFT · pith_short_8: PGPKLCWB

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/PGPKLCWB3LOGFGFTSQZSPWQFHS \
  | 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: 799ea58ac1dadc6298b3943327da053ca3981f5ccd0431c7942ab577858a361a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13653744d9256eab88b9cc69317432d79d9d2230a436fbb3d1ced3159d9a2467",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-12-02T12:51:05Z",
    "title_canon_sha256": "a54585aef0c08536438a2a820900e48c171c940d5bf60c5fd9de881f32c12a5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00675",
    "kind": "arxiv",
    "version": 1
  }
}