Pith Number

pith:3K25KC3S

pith:2026:3K25KC3SPEQTCOUB6JPIGF4ELR

not attested not anchored not stored refs pending

Sparse Channel Estimation for Pixel Antennas: Addressing the Pilot Rank Deficiency

Hongyu Li, Yiting Chen, Yumeng Zhang

arxiv:2605.18516 v1 · 2026-05-18 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3K25KC3SPEQTCOUB6JPIGF4ELR}

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	2026-05-20T00:06:05.382431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dab5d50b727921313a81f25e8317845c6c31f7d312ebdd57b167eab72b2b837e

Aliases

arxiv: 2605.18516 · arxiv_version: 2605.18516v1 · doi: 10.48550/arxiv.2605.18516 · pith_short_12: 3K25KC3SPEQT · pith_short_16: 3K25KC3SPEQTCOUB · pith_short_8: 3K25KC3S

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/3K25KC3SPEQTCOUB6JPIGF4ELR \
  | 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: dab5d50b727921313a81f25e8317845c6c31f7d312ebdd57b167eab72b2b837e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff850951697078590034ab33c9220d58e2c8c476eb8ad72cf5ba8c8a10f676ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-05-18T15:07:03Z",
    "title_canon_sha256": "e37d3e0c708f0412670e29d199018da402d4768067bc1e044be4c4214535bbfc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18516",
    "kind": "arxiv",
    "version": 1
  }
}