Pith Number

pith:SSNUZYGQ

pith:2013:SSNUZYGQS3KYQVUCL6MV5QQ3BC

not attested not anchored not stored refs pending

Inverse problems and invisibility cloaking for FEM models and resistor networks

Leo Tzou, Matti Lassas, Mikko Salo

arxiv:1307.1539 v2 · 2013-07-05 · math.AP · 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{SSNUZYGQS3KYQVUCL6MV5QQ3BC}

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	2026-05-18T03:18:53.054215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

949b4ce0d096d58856825f995ec21b088d2308e0a7efe942ea8c95890b95c0f8

Aliases

arxiv: 1307.1539 · arxiv_version: 1307.1539v2 · doi: 10.48550/arxiv.1307.1539 · pith_short_12: SSNUZYGQS3KY · pith_short_16: SSNUZYGQS3KYQVUC · pith_short_8: SSNUZYGQ

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/SSNUZYGQS3KYQVUCL6MV5QQ3BC \
  | 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: 949b4ce0d096d58856825f995ec21b088d2308e0a7efe942ea8c95890b95c0f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03fd5c763f8275e118b04236b7847a8db7bb5eff2cc3e4a7f7eeee32f29d9602",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-07-05T07:57:57Z",
    "title_canon_sha256": "173287a727f51f8b47b54bca4c0470ae8c96b44345aa3439330754cabd1e1a8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1539",
    "kind": "arxiv",
    "version": 2
  }
}