Pith Number

pith:NSA3FBMZ

pith:2016:NSA3FBMZUVRWVRQ5FYC53LFPD6

not attested not anchored not stored refs pending

A globally convergent numerical method for a 1-d inverse medium problem with experimental data

Anders Sullivan, Lam Nguyen, Loc H. Nguyen, Michael V. Klibanov

arxiv:1602.09092 v1 · 2016-02-29 · 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{NSA3FBMZUVRWVRQ5FYC53LFPD6}

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	2026-05-18T01:19:51.330550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c81b28599a5636ac61d2e05ddacaf1fbe076deb44aff41802b6323bc6561b27

Aliases

arxiv: 1602.09092 · arxiv_version: 1602.09092v1 · doi: 10.48550/arxiv.1602.09092 · pith_short_12: NSA3FBMZUVRW · pith_short_16: NSA3FBMZUVRWVRQ5 · pith_short_8: NSA3FBMZ

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/NSA3FBMZUVRWVRQ5FYC53LFPD6 \
  | 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: 6c81b28599a5636ac61d2e05ddacaf1fbe076deb44aff41802b6323bc6561b27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "545baa2faefa72f7ded7e027423c29f00d9e3181d6eed5253bb7933373ef409d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2016-02-29T18:45:40Z",
    "title_canon_sha256": "ad5e6cdaa7eb9c966c928434a5bb5d93c6f25db80e0ac194ec3fdd4805516a8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.09092",
    "kind": "arxiv",
    "version": 1
  }
}