Pith Number

pith:V5UXTJAM

pith:2025:V5UXTJAMHZ4EC7N6ISBRLXGTX6

not attested not anchored not stored refs pending

A modified Levenberg-Marquardt method for estimating the elastic material parameters of polymer waveguides using residuals between autocorrelated frequency responses

Bernd Henning, Carolin Birk, Dmitrij Dreiling, Dominik Itner, Hauke Gravenkamp

arxiv:2507.01706 v1 · 2025-07-02 · cs.CE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V5UXTJAMHZ4EC7N6ISBRLXGTX6}

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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	2026-07-05T11:30:53.676361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af6979a40c3e78417dbe448315dcd3bf92320df6ae94531b423fc9235c4fc71d

Aliases

arxiv: 2507.01706 · arxiv_version: 2507.01706v1 · doi: 10.48550/arxiv.2507.01706 · pith_short_12: V5UXTJAMHZ4E · pith_short_16: V5UXTJAMHZ4EC7N6 · pith_short_8: V5UXTJAM

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/V5UXTJAMHZ4EC7N6ISBRLXGTX6 \
  | 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: af6979a40c3e78417dbe448315dcd3bf92320df6ae94531b423fc9235c4fc71d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbfcb4b897710d5182046a6dc7563b5f18a87439dacfdb8ae3cd9a1f660ac726",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2025-07-02T13:39:33Z",
    "title_canon_sha256": "0447e68a042d28ea0a0f4a386f44f6631b9de1009f5af38f0bd2682e5fdec249"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.01706",
    "kind": "arxiv",
    "version": 1
  }
}