Pith Number

pith:O4TUWEXN

pith:2021:O4TUWEXNM24VML7HF5IQWVMB2O

not attested not anchored not stored refs pending

The anisotropic Calder\'on problem for high fixed frequency

Gunther Uhlmann, Yiran Wang

arxiv:2104.03477 v1 · 2021-04-08 · 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{O4TUWEXNM24VML7HF5IQWVMB2O}

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	2026-07-05T02:30:17.722524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77274b12ed66b9562fe72f510b5581d3994e6c640a12e022cf57a0d7eb72b1a5

Aliases

arxiv: 2104.03477 · arxiv_version: 2104.03477v1 · doi: 10.48550/arxiv.2104.03477 · pith_short_12: O4TUWEXNM24V · pith_short_16: O4TUWEXNM24VML7H · pith_short_8: O4TUWEXN

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/O4TUWEXNM24VML7HF5IQWVMB2O \
  | 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: 77274b12ed66b9562fe72f510b5581d3994e6c640a12e022cf57a0d7eb72b1a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e1962932fac39df0baff4039c682f2cfc2916d38b738cd4a3d3af66ff5ef0a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2021-04-08T02:27:03Z",
    "title_canon_sha256": "9f5a7dcb589147623f43a25b478a08fcca854e700bf1e3461150b0e54a4630bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.03477",
    "kind": "arxiv",
    "version": 1
  }
}