Pith Number

pith:IOVF366W

pith:2015:IOVF366WMYWI6R6ZSC4GSUR32B

not attested not anchored not stored refs pending

A locally gradient-preserving reinitialization for level set functions

Lei Li, Saverio E. Spagnolie, Xiaoqian Xu

arxiv:1504.02064 v2 · 2015-04-08 · math.NA · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IOVF366WMYWI6R6ZSC4GSUR32B}

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	2026-05-18T00:49:00.243429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43aa5dfbd6662c8f47d990b869523bd044078e9d4d7395a03381a071cfc24ef0

Aliases

arxiv: 1504.02064 · arxiv_version: 1504.02064v2 · doi: 10.48550/arxiv.1504.02064 · pith_short_12: IOVF366WMYWI · pith_short_16: IOVF366WMYWI6R6Z · pith_short_8: IOVF366W

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/IOVF366WMYWI6R6ZSC4GSUR32B \
  | 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: 43aa5dfbd6662c8f47d990b869523bd044078e9d4d7395a03381a071cfc24ef0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47ec441091e01b29bc4c15e3e1c2e8c4522e2f91d379a94a41ac52219c08d72d",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-08T18:19:31Z",
    "title_canon_sha256": "39648ea709390d58447affcc52ea0ed23dd825ae2b99736b3fe5ad2580c90f15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02064",
    "kind": "arxiv",
    "version": 2
  }
}