Pith Number

pith:ABBYWIY2

pith:2010:ABBYWIY2PFICLSPQEMNW74JL4X

not attested not anchored not stored refs pending

Sparse Channel Separation using Random Probes

Justin Romberg, Ramesh Neelamani

arxiv:1002.4222 v1 · 2010-02-22 · 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{ABBYWIY2PFICLSPQEMNW74JL4X}

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	2026-05-18T02:08:57.958626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00438b231a795025c9f0231b6ff12be5d7b44794e48baee87ea5d265ad4f472a

Aliases

arxiv: 1002.4222 · arxiv_version: 1002.4222v1 · doi: 10.48550/arxiv.1002.4222 · pith_short_12: ABBYWIY2PFIC · pith_short_16: ABBYWIY2PFICLSPQ · pith_short_8: ABBYWIY2

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/ABBYWIY2PFICLSPQEMNW74JL4X \
  | 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: 00438b231a795025c9f0231b6ff12be5d7b44794e48baee87ea5d265ad4f472a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6bdb3a07f701f28fdbaa8f812c6de48ef338b6ba1b83c38f3db4cbade9ab90c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2010-02-22T23:33:36Z",
    "title_canon_sha256": "a7c2b209817057c04bd1c84d87826ad1b78c5598a2095f1065a608166c28454d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.4222",
    "kind": "arxiv",
    "version": 1
  }
}