Pith Number

pith:3AOQZT4B

pith:2018:3AOQZT4BXQ5L3SOSN4DIBPFOXC

not attested not anchored not stored refs pending

Nachman's reconstruction for the Calderon problem with discontinuous conductivities

George Lytle, Peter Perry, Samuli Siltanen

arxiv:1809.09272 v1 · 2018-09-25 · 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{3AOQZT4BXQ5L3SOSN4DIBPFOXC}

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	2026-05-18T00:04:53.883279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d81d0ccf81bc3abdc9d26f0680bcaeb892901c01725612078d25d16e605d63a4

Aliases

arxiv: 1809.09272 · arxiv_version: 1809.09272v1 · doi: 10.48550/arxiv.1809.09272 · pith_short_12: 3AOQZT4BXQ5L · pith_short_16: 3AOQZT4BXQ5L3SOS · pith_short_8: 3AOQZT4B

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/3AOQZT4BXQ5L3SOSN4DIBPFOXC \
  | 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: d81d0ccf81bc3abdc9d26f0680bcaeb892901c01725612078d25d16e605d63a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d437701c8d44a22ff984bb61f4ee596ebfa318e15f042d433badedc95f9cfece",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-09-25T00:52:36Z",
    "title_canon_sha256": "8591d141b0dd53e546c5e8094ef2f572c8b965ca961db1da39398f7c9a7d8988"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.09272",
    "kind": "arxiv",
    "version": 1
  }
}