Pith Number

pith:CYLHYQ4F

pith:2021:CYLHYQ4FTCLBZU5NNMUCVRTD3A

not attested not anchored not stored refs pending

Higher-Order Regularity of the Free Boundary in the Inverse First-Passage Problem

David Saunders, John Chadam, Xinfu Chen

arxiv:2112.10918 v1 · 2021-12-21 · math.AP · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CYLHYQ4FTCLBZU5NNMUCVRTD3A}

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	2026-07-05T03:42:27.586723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16167c438598961cd3ad6b282ac663d821b9fa1671b0c0f10a3f1e4f75384d08

Aliases

arxiv: 2112.10918 · arxiv_version: 2112.10918v1 · doi: 10.48550/arxiv.2112.10918 · pith_short_12: CYLHYQ4FTCLB · pith_short_16: CYLHYQ4FTCLBZU5N · pith_short_8: CYLHYQ4F

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/CYLHYQ4FTCLBZU5NNMUCVRTD3A \
  | 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: 16167c438598961cd3ad6b282ac663d821b9fa1671b0c0f10a3f1e4f75384d08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3621ed0ddc4f3845da19c52570b63927bd88aefbef5e481711970263ca312cb9",
    "cross_cats_sorted": [
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2021-12-21T00:36:01Z",
    "title_canon_sha256": "07471b1f6613e84da6e49bcf50ebb43b37c11fe6265da88c4ed8f243bb71e3ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.10918",
    "kind": "arxiv",
    "version": 1
  }
}