Pith Number

pith:6H55JGRZ

pith:2014:6H55JGRZY5LXQPXCAOJJFQTVTE

not attested not anchored not stored refs pending

A-posteriori error estimates for inverse problems

Adrian Sandu, Vishwas Rao

arxiv:1409.7129 v2 · 2014-09-25 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6H55JGRZY5LXQPXCAOJJFQTVTE}

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	2026-05-18T02:28:20.562298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1fbd49a39c757783ee2039292c275991249a64281909aa243b7471a71bca00c

Aliases

arxiv: 1409.7129 · arxiv_version: 1409.7129v2 · doi: 10.48550/arxiv.1409.7129 · pith_short_12: 6H55JGRZY5LX · pith_short_16: 6H55JGRZY5LXQPXC · pith_short_8: 6H55JGRZ

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/6H55JGRZY5LXQPXCAOJJFQTVTE \
  | 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: f1fbd49a39c757783ee2039292c275991249a64281909aa243b7471a71bca00c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "908273492f9729f9fe57dc60469a17ff6abdd21bf4bf3826f86e30122709d2b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-09-25T00:36:37Z",
    "title_canon_sha256": "ff4e0d5ddf71061c40962ad7b3323e77ce013ac3fd3e2f82ac1a12cbe9061514"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.7129",
    "kind": "arxiv",
    "version": 2
  }
}